Interactions between Alphen Expectorant and Idelalisib
1 drug interaction and 54 additional warnings found for the following 2 drugs:
- Alphen Expectorant (codeine/guaifenesin/phenylpropanolamine)
- idelalisib
Drug interactions
Major drug interactions
Major:
codeine idelalisib
Applies to: Alphen Expectorant (codeine / guaifenesin / phenylpropanolamine) and idelalisib
Monitor closely
Coadministration with moderate and potent CYP450 3A4 inhibitors may increase the plasma concentrations and effects of codeine, which is partially metabolized by the isoenzyme. The proposed mechanism is decreased CYP450 3A4 conversion of codeine to the inactive metabolite, norcodeine. This results in increased levels of codeine available for metabolism via CYP450 2D6 to morphine, thereby elevating morphine levels and increasing the risk of opioid-related adverse effects, including CNS depression and potentially fatal respiratory depression. Further, this risk may be increased in patients who are ultra-rapid metabolizers of codeine due to a CYP450 2D6 polymorphism; however, data are limited to case reports. Conversely, discontinuing a CYP450 3A4 inhibitor in patients on a stable dose of codeine may result in reduced analgesia, and can initiate the onset of opioid withdrawal symptoms.
Management
If coadministration of codeine with a CYP450 3A4 inhibitor is necessary, a dose reduction of codeine should be considered, and patients should be monitored for excessive or prolonged CNS and respiratory depression, particularly if the CYP450 3A4 inhibitor also possesses CNS- and/or respiratory-depressant effects. Additional caution and closer monitoring may be advisable in patients who are ultra-rapid metabolizers of codeine due to a CYP450 2D6 polymorphism. Following discontinuation of a CYP450 3A4 inhibitor, patients should be monitored for reduced analgesia or onset of opioid withdrawal symptoms, and a dose increase of codeine should be considered.
References (4)
- (2024) "Product Information. Codeine Sulfate (codeine)." Lannett Company Inc
- (2025) "Product Information. Codeine Contin (codeine)." Purdue Pharma
- (2024) "Product Information. Codeine (codeine)." Thornton & Ross Ltd
- (2025) "Product Information. Codeine Phosphate (Aspen) (codeine)." Aspen Pharmacare Australia Pty Ltd
Food/lifestyle interactions
Major food/lifestyle interactions
Major:
codeine Food/Lifestyle
Applies to: Alphen Expectorant (codeine / guaifenesin / phenylpropanolamine)
Generally avoid
Alcohol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur. In addition, alcohol may affect opioid release from sustained-release formulations.
Generally avoid
Grapefruit or grapefruit juice may increase the plasma concentrations of opioid analgesics by inhibiting CYP450 3A4-mediated metabolism of these agents, although the interaction has not been studied. In general, the effect of grapefruit juice is concentration-, dose- and preparation-dependent, and can vary widely among brands. Certain preparations of grapefruit juice (e.g., high dose, double strength) have sometimes demonstrated potent inhibition of CYP450 3A4, while other preparations (e.g., low dose, single strength) have typically demonstrated moderate inhibition. Pharmacokinetic interactions involving grapefruit juice are also subject to a high degree of interpatient variability, thus the extent to which a given patient may be affected is difficult to predict.
Management
Patients should not consume alcoholic beverages or use drug products that contain alcohol during treatment with opioid analgesics. Any history of alcohol or illicit drug use should be considered when prescribing an opioid analgesic, and therapy initiated at a lower dosage if necessary. Patients should be closely monitored for signs and symptoms of sedation, respiratory depression, and hypotension. Due to a high degree of interpatient variability with respect to grapefruit juice interactions, patients treated with opioid analgesics should preferably avoid the consumption of grapefruit and grapefruit juice.
References (18)
- (2017) "Product Information. Alfentanil Hydrochloride (alfentanil)." Akorn Inc
- (2024) "Product Information. TraMADol Hydrochloride (traMADol)." Advagen Pharma Ltd
- (2024) "Product Information. Jamp Tramadol (tramadol)." Jamp Pharma Corporation
- (2025) "Product Information. Tramadol (tramadol)." Sigma Pharmaceuticals Plc
- (2024) "Product Information. Tramedo (tRAMadol)." Alphapharm Pty Ltd
- (2022) "Product Information. Alfentanil (alfentanil)." Hameln Pharma Ltd
- (2024) "Product Information. Butorphanol Tartrate (butorphanol)." Apotex Corporation
- (2024) "Product Information. Codeine Sulfate (codeine)." Lannett Company Inc
- (2024) "Product Information. Meperidine Hydrochloride (meperidine)." Genus Lifesciences Inc.
- (2023) "Product Information. Dsuvia (SUFentanil)." AcelRx Pharmaceuticals
- (2024) "Product Information. Dzuveo (sufentanil)." Aguettant Ltd
- (2025) "Product Information. Pethidine (pethidine)." Martindale Pharmaceuticals Ltd
- (2023) "Product Information. Meperidine Hydrochloride (meperidine)." Sandoz Canada Incorporated
- (2024) "Product Information. Pethidine (Juno) (pethidine)." Juno Pharmaceuticals Pty Ltd
- Cherrier MM, Shen DD, Shireman L, et al. (2021) "Elevated customary alcohol consumption attenuates opioid effects." Pharmacol Biochem Behav, 4, p. 1-27
- Fuhr LM, Marok FZ, Fuhr U, Selzer D, Lehr T (2023) "Physiologically based pharmacokinetic modeling of bergamottin and 6,7-dihydroxybergamottin to describe CYP3A4 mediated grapefruit-drug interactions." Clin Pharmacol Ther, 114, p. 470-82
- (2025) "Product Information. TraMADol Hydrochloride ER (traMADol)." Trigen Laboratories Inc
- (2025) "Product Information. Codeine Contin (codeine)." Purdue Pharma
Major:
codeine Alcohol (Ethanol)
Applies to: Alphen Expectorant (codeine / guaifenesin / phenylpropanolamine)
Generally avoid
Ethanol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur.
Management
Concomitant use of opioid analgesics with ethanol should be avoided.
References (47)
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- Sturner WQ, Garriott JC (1973) "Deaths involving propoxyphene: a study of 41 cases over a two-year period." JAMA, 223, p. 1125-30
- Girre C, Hirschhorn M, Bertaux L, et al. (1991) "Enhancement of propoxyphene bioavailability by ethanol: relation to psychomotor and cognitive function in healthy volunteers." Eur J Clin Pharmacol, 41, p. 147-52
- Reece PA, Cozamanis I, Zacest R (1980) "Kinetics of hydralazine and its main metabolites in slow and fast acetylators." Clin Pharmacol Ther, 28, p. 769-78
- Levine B, Saady J, Fierro M, Valentour J (1984) "A hydromorphone and ethanol fatality." J Forensic Sci, 29, p. 655-9
- Sellers EM, Hamilton CA, Kaplan HL, Degani NC, Foltz RL (1985) "Pharmacokinetic interaction of propoxyphene with ethanol." Br J Clin Pharmacol, 19, p. 398-401
- Carson DJ (1977) "Fatal dextropropoxyphene poisoning in Northern Ireland. Review of 30 cases." Lancet, 1, p. 894-7
- Rosser WW (1980) "The interaction of propoxyphene with other drugs." Can Med Assoc J, 122, p. 149-50
- Edwards C, Gard PR, Handley SL, Hunter M, Whittington RM (1982) "Distalgesic and ethanol-impaired function." Lancet, 2, p. 384
- Kiplinger GF, Sokol G, Rodda BE (1974) "Effect of combined alcohol and propoxyphene on human performance." Arch Int Pharmacodyn Ther, 212, p. 175-80
- (2017) "Product Information. Alfentanil Hydrochloride (alfentanil)." Akorn Inc
- (2022) "Product Information. Palexia SR (tAPENTadol)." Seqirus Pty Ltd
- (2022) "Product Information. Tapimio (tapentadol)." Neuraxpharm UK Ltd
- (2023) "Product Information. Nucynta (tapentadol)." Collegium Pharmaceutical, Inc.
- (2024) "Product Information. TraMADol Hydrochloride (traMADol)." Advagen Pharma Ltd
- (2018) "Product Information. Opium Deodorized (opium)." ANIP Acquisition Company
- (2024) "Product Information. Jamp Tramadol (tramadol)." Jamp Pharma Corporation
- (2025) "Product Information. Tramadol (tramadol)." Sigma Pharmaceuticals Plc
- (2024) "Product Information. Morphine Sulfate ER (morphine)." Actavis (formerly Abrika Pharmaceuticals LLP)
- (2024) "Product Information. Oxymorphone Hydrochloride (oxyMORphone)." Aurolife Pharma LLC
- (2024) "Product Information. Levorphanol Tartrate (levorphanol)." Virtus Pharmaceuticals LLC
- (2025) "Product Information. Nalbuphine Hydrochloride (nalbuphine)." Hospira Inc
- (2022) "Product Information. Remifentanil (remifentanil)." Wockhardt UK Ltd
- (2024) "Product Information. Naloxone HCl-Pentazocine HCl (naloxone-pentazocine)." Actavis U.S. (Amide Pharmaceutical Inc)
- (2022) "Product Information. Alfentanil (alfentanil)." Hameln Pharma Ltd
- (2024) "Product Information. Butorphanol Tartrate (butorphanol)." Apotex Corporation
- (2024) "Product Information. Codeine Sulfate (codeine)." Lannett Company Inc
- (2024) "Product Information. Cyclizine-Dipipanone (cyclizine-dipipanone)." Advanz Pharma
- (2024) "Product Information. Meperidine Hydrochloride (meperidine)." Genus Lifesciences Inc.
- (2023) "Product Information. Dsuvia (SUFentanil)." AcelRx Pharmaceuticals
- (2024) "Product Information. Dzuveo (sufentanil)." Aguettant Ltd
- (2024) "Product Information. Buprenorphine Hydrochloride (buprenorphine)." Advagen Pharma Limited
- (2025) "Product Information. Pethidine (pethidine)." Martindale Pharmaceuticals Ltd
- (2023) "Product Information. Meperidine Hydrochloride (meperidine)." Sandoz Canada Incorporated
- (2025) "Product Information. Actimorph (morphine)." Ethypharm UK Ltd
- (2024) "Product Information. Doloral Sirop (morphine)." Laboratoire Atlas Inc
- (2024) "Product Information. Morphine Sulfate (Medsurge) (morphine)." Medicianz Healthcare Pty Ltd
- (2023) "Product Information. Diacetylmorphine Hydrochloride (diamorphine)." Pharmascience Inc
- (2024) "Product Information. Pethidine (Juno) (pethidine)." Juno Pharmaceuticals Pty Ltd
- Cherrier MM, Shen DD, Shireman L, et al. (2021) "Elevated customary alcohol consumption attenuates opioid effects." Pharmacol Biochem Behav, 4, p. 1-27
- Fuhr LM, Marok FZ, Fuhr U, Selzer D, Lehr T (2023) "Physiologically based pharmacokinetic modeling of bergamottin and 6,7-dihydroxybergamottin to describe CYP3A4 mediated grapefruit-drug interactions." Clin Pharmacol Ther, 114, p. 470-82
- (2021) "Product Information. Nucynta Extended-Release (tapentadol)." Endo Operations, LTD.
- (2024) "Product Information. Oxymorphone Hydrochloride ER (oxyMORphone)." Amneal Pharmaceuticals LLC
- (2025) "Product Information. Morphine Sulfate (morphine)." BGP Pharma ULC
- (2025) "Product Information. Hysingla ER (HYDROcodone)." Purdue Pharma LP
- (2021) "Product Information. Covonia Dry Cough (pholcodine)." Thornton & Ross Ltd
- (2018) "Product Information. TUSCALMAN NIÑOS (noscapina)." DESMA LABORATORIO FARMACEUTICO, S.L.
Moderate food/lifestyle interactions
Moderate:
phenylpropanolamine Food/Lifestyle
Applies to: Alphen Expectorant (codeine / guaifenesin / phenylpropanolamine)
Generally avoid
Alcohol may potentiate the central nervous system and cardiovascular effects of centrally-acting appetite suppressants. In one study, concurrent administration of methamphetamine (30 mg intravenously) and ethanol (1 gm/kg orally over 30 minutes) increased heart rate by 24 beats/minute compared to methamphetamine alone. This increases cardiac work and myocardial oxygen consumption, which may lead to more adverse cardiovascular effects than either agent alone. Subjective effects of ethanol were diminished in the eight study subjects, but those of methamphetamine were not affected. The pharmacokinetics of methamphetamine were also unaffected except for a decrease in the apparent volume of distribution at steady state.
Management
Concomitant use of centrally-acting appetite suppressants and alcohol should be avoided if possible, especially in patients with a history of cardiovascular disease. Patients should be counselled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References (3)
- Mendelson J, Jones RT, Upton R, Jacob P 3rd (1995) "Methamphetamine and ethanol interactions in humans." Clin Pharmacol Ther, 57, p. 559-68
- (2001) "Product Information. Didrex (benzphetamine)." Pharmacia and Upjohn
- (2012) "Product Information. Suprenza (phentermine)." Akrimax Pharmaceuticals
Moderate:
phenylpropanolamine Caffeine
Applies to: Alphen Expectorant (codeine / guaifenesin / phenylpropanolamine)
Monitor
Coadministration of two or more sympathomimetic or noradrenergic agents may increase the risk of nervousness, irritability, tachycardia, and/or increased blood pressure. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic and/or noradrenergic agents, including norepinephrine transporter inhibitors. Additive increases in blood pressure and heart rate may occur due to enhanced peripheral sympathetic activity.
Management
Caution is advised if two or more sympathomimetic or noradrenergic agents are coadministered. Pulse and blood pressure should be closely monitored. Consultation with individual product labeling, as well as relevant institutional protocols, may be advisable for further guidance.
References (20)
- Rosenblatt JE, Lake CR, van Kammen DP, Ziegler MG, Bunney WE Jr (1979) "Interactions of amphetamine, pimozide, and lithium on plasma norepineophrine and dopamine-beta-hydroxylase in schizophrenic patients." Psychiatry Res, 1, p. 45-52
- Cavanaugh JH, Griffith JD, Oates JA (1970) "Effect of amphetamine on the pressor response to tyramine: formation of p-hydroxynorephedrine from amphetamine in man." Clin Pharmacol Ther, 11, p. 656
- (2001) "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc
- (2001) "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals
- (2001) "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals
- (2001) "Product Information. Focalin (dexmethylphenidate)." Mikart Inc
- (2024) "Product Information. Ephedrine (ephedrine)." Hameln Pharma Ltd
- (2023) "Product Information. Ephedrine Hydrochloride (ephedrine)." Wockhardt UK Ltd
- (2026) "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company
- (2025) "Product Information. Atomoxetine (atomoxetine)." Zentiva Pharma UK Ltd
- (2026) "Product Information. Atomoxetine (Apo) (atomoxetine)." Arrotex Pharmaceuticals Pty Ltd
- Angita Pharma, Inc (2026) AG-ATOMOXETINE Product Monograph (Health Canada) https://pdf.hres.ca/dpd_pm/00059014.PDF
- (2026) "Product Information. Boots Decongestant (Pseudoephedrine) (pseudoephedrine)." The Boots Company Plc
- (2023) "Product Information. Sinus and Nasal Decongestant (Trust) (pseudoephedrine)." Noumed Pharmaceuticals Pty Ltd
- (2019) "Product Information. Ephedrine (ephedrine)." Pfizer Australia Pty Ltd
- (2024) "Product Information. EPHEDrine Sulfate (ePHEDrine)." Amneal Pharmaceuticals LLC
- (2024) "Product Information. Lemsip Cough Max for Mucus Cough and Cold (guaifenesin/paracetamol/phenylephrine)." Reckitt Benckiser Healthcare (UK) Ltd
- emc (2026) Product information: sudafed plus blocked nose 1mg/50mg/ml nasal spray. https://www.medicines.org.uk/emc/product/14256/smpc?utm_source=chatgpt.com
- (2023) "Product Information. EPHEDrine Sulfate (ePHEDrine)." Baxter Corporation
- Neo Health (OTC) Pty Ltd (2026) Product information: pseudoephedrine hydrochloride-paracetamol capsules. https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent&id=CP-2024-PI-02603-1&d=20260804172310101&d=20260827172310101
Disease interactions
50 potential interactions Applies to: 44 conditions, including Constipation, Benign Prostatic Hyperplasia, Seizures, Diarrhea, and Arrhythmia.
Acute Alcohol Intoxication
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Acute Alcohol Intoxication.
The use of opiate agonists is contraindicated in patients with acute alcohol intoxication exhibiting depressed vital signs. The central nervous system depressant effects of opiate agonists may be additive with those of alcohol. Severe respiratory depression and death may occur. Therapy with opiate agonists should be administered cautiously in patients who might be prone to acute alcohol intake.
Adrenal Insufficiency
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Adrenal Insufficiency.
Patients with Addison's disease may have increased risk of respiratory depression and prolonged CNS depression associated with the use of narcotic (opioid) analgesic agents. Conversely, these agents may cause or potentiate adrenal insufficiency. Therapy with opioids should be administered cautiously and initiated at reduced dosages in patients with adrenocortical insufficiency. Subsequent doses should be titrated based on individual response rather than a fixed dosing schedule.
Alcoholism
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Alcoholism.
Opiate agonists have the potential to cause dependence and abuse. Tolerance as well as physical and psychological dependence can develop after prolonged use. Abrupt cessation, reduction in dosage, or administration of an opiate antagonist such as naloxone may precipitate withdrawal symptoms. In patients who have developed tolerance to an opiate agonist, overdosage can still produce respiratory depression and death, and cross-tolerance usually will occur with other agents in the class. Addiction-prone individuals, such as those with a history of alcohol or substance abuse, should be under careful surveillance or medical supervision when treated with opiate agonists. It may be prudent to refrain from dispensing large quantities of medication to these patients. After prolonged use or if dependency is suspected, withdrawal of opiate therapy should be undertaken gradually using a dosage-tapering schedule.
Altered Consciousness
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Altered Consciousness.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Arrhythmia
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Arrhythmia.
Opiate agonists have cholinergic activity. Large doses and/or rapid intravenous administration may produce bradycardia and arrhythmias via stimulation of medullary vagal nuclei. Therapy with opiate agonists should be administered cautiously in patients with a history of arrhythmias. Clinical monitoring of cardiovascular status is recommended during therapy.
Asphyxia
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Asphyxia.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Benign Prostatic Hyperplasia
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Benign Prostatic Hyperplasia.
Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.
Biliary Obstruction
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Biliary Obstruction.
Opioid agonists may cause spasm of the sphincter of Oddi, which may increase biliary tract pressure. Other opioid-induced effects may include a reduction in biliary and pancreatic secretions and transient elevations in serum amylase. Patients with biliary tract disease (including acute pancreatitis) should be regularly evaluated for worsening symptoms. Therapy with opioids should be administered cautiously in patients with biliary tract disease, gallbladder disease, or acute pancreatitis.
Bone Marrow Depression/Low Blood Counts
Moderate:
idelalisib
Idelalisib has a moderate potential interaction with Bone Marrow Depression/Low Blood Counts.
Cases of neutropenia have been reported with the use of idelalisib. It is recommended to monitor blood counts at least every 2 weeks for the first 6 months of therapy, and periodically thereafter. Care and close monitoring is recommended.
Brain Tumor
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Brain Tumor.
The hypoventilation associated with administration of opiate agonists, particularly by the intravenous route, can induce cerebral hypoxia and vasodilatation with resultant increase in intracranial pressure. Opiate agonists should not be used in patients with suspected or known head injury or increased intracranial pressure. Also, clinicians treating such patients should be aware that opiate agonists may interfere with the evaluation of CNS function, especially with respect to consciousness levels, respiratory status, and pupillary changes.
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Brain Tumor.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Cardiovascular Conditions and Disorders
Major:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a major potential interaction with Cardiovascular Conditions and Disorders.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Cerebral Vascular Disorder
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Cerebral Vascular Disorder.
The hypoventilation associated with administration of opiate agonists, particularly by the intravenous route, can induce cerebral hypoxia and vasodilatation with resultant increase in intracranial pressure. Opiate agonists should not be used in patients with suspected or known head injury or increased intracranial pressure. Also, clinicians treating such patients should be aware that opiate agonists may interfere with the evaluation of CNS function, especially with respect to consciousness levels, respiratory status, and pupillary changes.
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Cerebral Vascular Disorder.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Cerebrovascular Insufficiency
Major:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a major potential interaction with Cerebrovascular Insufficiency.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Constipation
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Constipation.
Narcotic (opioid) analgesic agents increase smooth muscle tone in the gastrointestinal tract and decrease peristalsis, which can lead to elevated intraluminal pressure, spasm, and constipation following prolonged use. In patients with severe or acute inflammatory bowel disease, the decrease in colonic motility may induce toxic megacolon. Therapy with opioids should be administered cautiously in patients with gastrointestinal obstruction, constipation, inflammatory bowel disease, or recent gastrointestinal tract surgery. Gastrointestinal effects appear to be the most pronounced with morphine.
Dehydration
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Dehydration.
Opiate agonists can induce vasodilation and significant hypotension, particularly when given in high dosages and/or by rapid intravenous administration. Opiate analgesics cause vasodilatation that may exacerbate hypotension and hypoperfusion and, therefore, are contraindicated in circulatory shock. At therapeutic analgesic dosages, ambulatory patients are more likely to experience dizziness and hypotension than patients who are confined to bed. However, orthostatic hypotension may occur in supine patients upon rising. Therapy with opiate agonists should be administered cautiously and initiated at reduced dosages in patients with hypovolemia, or a predisposition to hypotension. When given by intramuscular or subcutaneous administration, clinicians should also be aware that impaired perfusion in these patients may prevent complete absorption of the drug. With repeated injections, an excessive amount may be absorbed suddenly if normal circulation is reestablished.
Dermatitis, Drug-Induced
Major:
idelalisib
Idelalisib has a major potential interaction with Dermatitis, Drug-Induced.
Fatal cases of severe cutaneous reactions, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) have occurred in patients treated with idelalisib. It is recommended that if SJS or TEN is suspected to interrupt therapy until the etiology of the reaction has been determined, and if SJS or TEN is confirmed to permanently discontinue treatment with idelalisib. Monitor patients for the development of severe cutaneous reactions and discontinue idelalisib if clinically appropriate.
Diabetes Mellitus
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Diabetes Mellitus.
Sympathomimetic agents may cause increases in blood glucose concentrations. These effects are usually transient and slight but may be significant with dosages higher than those normally recommended. Therapy with sympathomimetic agents should be administered cautiously in patients with diabetes mellitus. Closer monitoring of blood glucose concentrations may be appropriate.
Diarrhea
Major:
idelalisib
Idelalisib has a major potential interaction with Diarrhea.
Severe diarrhea or colitis have been reported in patients treated with idelalisib. It is recommended to avoid concurrent use of idelalisib and other drugs that cause diarrhea. Care should be taken when using this agent in patients with diarrhea or colitis.
Drug Dependence
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Drug Dependence.
Opiate agonists have the potential to cause dependence and abuse. Tolerance as well as physical and psychological dependence can develop after prolonged use. Abrupt cessation, reduction in dosage, or administration of an opiate antagonist such as naloxone may precipitate withdrawal symptoms. In patients who have developed tolerance to an opiate agonist, overdosage can still produce respiratory depression and death, and cross-tolerance usually will occur with other agents in the class. Addiction-prone individuals, such as those with a history of alcohol or substance abuse, should be under careful surveillance or medical supervision when treated with opiate agonists. It may be prudent to refrain from dispensing large quantities of medication to these patients. After prolonged use or if dependency is suspected, withdrawal of opiate therapy should be undertaken gradually using a dosage-tapering schedule.
Gallbladder Disease
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Gallbladder Disease.
Opioid agonists may cause spasm of the sphincter of Oddi, which may increase biliary tract pressure. Other opioid-induced effects may include a reduction in biliary and pancreatic secretions and transient elevations in serum amylase. Patients with biliary tract disease (including acute pancreatitis) should be regularly evaluated for worsening symptoms. Therapy with opioids should be administered cautiously in patients with biliary tract disease, gallbladder disease, or acute pancreatitis.
Gastrointestinal Obstruction
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Gastrointestinal Obstruction.
Opioid analgesics are contraindicated in patients with known or suspected gastrointestinal obstruction, including paralytic ileus.
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Gastrointestinal Obstruction.
Narcotic (opioid) analgesic agents increase smooth muscle tone in the gastrointestinal tract and decrease peristalsis, which can lead to elevated intraluminal pressure, spasm, and constipation following prolonged use. In patients with severe or acute inflammatory bowel disease, the decrease in colonic motility may induce toxic megacolon. Therapy with opioids should be administered cautiously in patients with gastrointestinal obstruction, constipation, inflammatory bowel disease, or recent gastrointestinal tract surgery. Gastrointestinal effects appear to be the most pronounced with morphine.
Gastrointestinal Perforation
Moderate:
idelalisib
Idelalisib has a moderate potential interaction with Gastrointestinal Perforation.
Fatal and serious intestinal perforations have been reported in patients treated with idelalisib, some patients reporting moderate to severe diarrhea at the time of perforation. Advise patients to promptly report any new or worsening abdominal pain, chills, fever, nausea, or vomiting. Discontinue therapy with idelalisib permanently in patients who experience intestinal perforation.
Glaucoma/Intraocular Hypertension
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Glaucoma/Intraocular Hypertension.
Sympathomimetic agents can induce transient mydriasis via stimulation of alpha-1 adrenergic receptors. In patients with anatomically narrow angles or narrow-angle glaucoma, pupillary dilation can provoke an acute attack. In patients with other forms of glaucoma, mydriasis may occasionally increase intraocular pressure. Therapy with sympathomimetic agents should be administered cautiously in patients with or predisposed to glaucoma, particularly narrow-angle glaucoma.
Head Injury
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Head Injury.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Head Injury.
The hypoventilation associated with administration of opiate agonists, particularly by the intravenous route, can induce cerebral hypoxia and vasodilatation with resultant increase in intracranial pressure. Opiate agonists should not be used in patients with suspected or known head injury or increased intracranial pressure. Also, clinicians treating such patients should be aware that opiate agonists may interfere with the evaluation of CNS function, especially with respect to consciousness levels, respiratory status, and pupillary changes.
Hyperthyroidism
Major:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a major potential interaction with Hyperthyroidism.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Hypotension
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Hypotension.
Opiate agonists can induce vasodilation and significant hypotension, particularly when given in high dosages and/or by rapid intravenous administration. Opiate analgesics cause vasodilatation that may exacerbate hypotension and hypoperfusion and, therefore, are contraindicated in circulatory shock. At therapeutic analgesic dosages, ambulatory patients are more likely to experience dizziness and hypotension than patients who are confined to bed. However, orthostatic hypotension may occur in supine patients upon rising. Therapy with opiate agonists should be administered cautiously and initiated at reduced dosages in patients with hypovolemia, or a predisposition to hypotension. When given by intramuscular or subcutaneous administration, clinicians should also be aware that impaired perfusion in these patients may prevent complete absorption of the drug. With repeated injections, an excessive amount may be absorbed suddenly if normal circulation is reestablished.
Infection
Moderate:
idelalisib
Idelalisib has a moderate potential interaction with Infection.
Fatal and/or serious infections, including pneumonia, sepsis, febrile neutropenia, Pneumocystis jirovecii pneumonia (PJP) or cytomegalovirus (CMV) have been reported in patients treated with idelalisib. It is recommended to monitor patients for signs and symptoms of infection and to interrupt therapy with idelalisib for Grade 3 or higher infection. Consider prophylaxis for PJP in patients at risk and interrupt therapy in patients with suspected PJP infection of any grade, and permanently discontinue treatment if PJP infection of any grade is confirmed or interrupt idelalisib in the setting of positive CMV PCR or antigen test until the infection has resolved. If therapy is subsequently resumed, patients should be monitored (by PCR or antigen test) for CMV reactivation at least monthly.
Infectious Gastroenteritis
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Infectious Gastroenteritis.
Narcotic (opioid) analgesic agents may prolong and/or worsen diarrhea associated with organisms that invade the intestinal mucosa, such as toxigenic Escherichia coli, Salmonella, Shigella, and pseudomembranous colitis due to broad-spectrum antibiotics. These agents decrease gastrointestinal motility, which may delay the excretion of infective gastroenteric organisms and/or their toxins. Other symptoms and complications such as fever, shedding of organisms, and extraintestinal illness may also be increased or prolonged. Therapy with opioids should be avoided or administered cautiously in patients with infectious diarrhea, particularly that due to pseudomembranous enterocolitis or enterotoxin-producing bacteria or if accompanied by high fever, pus, or blood in the stool.
Inflammatory Bowel Disease
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Inflammatory Bowel Disease.
Narcotic (opioid) analgesic agents increase smooth muscle tone in the gastrointestinal tract and decrease peristalsis, which can lead to elevated intraluminal pressure, spasm, and constipation following prolonged use. In patients with severe or acute inflammatory bowel disease, the decrease in colonic motility may induce toxic megacolon. Therapy with opioids should be administered cautiously in patients with gastrointestinal obstruction, constipation, inflammatory bowel disease, or recent gastrointestinal tract surgery. Gastrointestinal effects appear to be the most pronounced with morphine.
Interstitial Lung Disease
Moderate:
idelalisib
Idelalisib has a moderate potential interaction with Interstitial Lung Disease.
The use of certain multikinase inhibitors has been associated with pulmonary toxicity. Serious cases of interstitial lung disease (ILD), including fatal cases and interstitial pneumonitis or pulmonary fibrosis have been reported. Caution is recommended when using these agents in patients with a history of interstitial pneumonitis or pulmonary fibrosis or those patients presenting with acute onset of new or progressive unexplained pulmonary symptoms such as dyspnea, cough, and fever pending diagnostic evaluation. If ILD is confirmed, these agents should be permanently discontinued and appropriate measures should be instituted. Treatment should be immediately withheld in patients diagnosed with ILD/pneumonitis and permanently discontinued if no other potential causes of ILD/pneumonitis have been identified.
Intestinal Anastomoses
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Intestinal Anastomoses.
Narcotic (opioid) analgesic agents increase smooth muscle tone in the gastrointestinal tract and decrease peristalsis, which can lead to elevated intraluminal pressure, spasm, and constipation following prolonged use. In patients with severe or acute inflammatory bowel disease, the decrease in colonic motility may induce toxic megacolon. Therapy with opioids should be administered cautiously in patients with gastrointestinal obstruction, constipation, inflammatory bowel disease, or recent gastrointestinal tract surgery. Gastrointestinal effects appear to be the most pronounced with morphine.
Liver Disease
Major:
idelalisib
Idelalisib has a major potential interaction with Liver Disease.
Fatal and/or serious hepatotoxicity have been reported in patients treated with idelalisib. Monitor ALT and AST in all patients as clinically appropriate. Patients with baseline hepatic impairment should be monitored for signs of idelalisib toxicity and dose modification with idelalisib should be made accordingly. It is recommended to monitor weekly for liver toxicity if the ALT or AST rises above 3 times the upper limit of normal until resolved and withhold therapy with idelalisib if the ALT or AST is greater than 5 times the upper limit of normal, and continue to monitor AST, ALT and total bilirubin weekly until the normal levels are attained. Discontinue idelalisib for recurrent hepatotoxicity and to avoid concurrent use with other drugs that may cause liver toxicity.
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Liver Disease.
Narcotic (opioid) analgesic agents are extensively metabolized by the liver, and several of them (e.g., codeine, hydrocodone, meperidine, methadone, morphine, propoxyphene) have active metabolites that are further converted to inactive substances. The serum concentrations of these agents and their metabolites may be increased and the half-lives prolonged in patients with impaired hepatic function. Therapy with opioids should be administered cautiously and initiated at reduced dosages in patients with liver disease. Subsequent doses should be titrated based on individual response rather than a fixed dosing schedule.
Noninfectious Colitis
Major:
idelalisib
Idelalisib has a major potential interaction with Noninfectious Colitis.
Severe diarrhea or colitis have been reported in patients treated with idelalisib. It is recommended to avoid concurrent use of idelalisib and other drugs that cause diarrhea. Care should be taken when using this agent in patients with diarrhea or colitis.
Pancreatitis
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Pancreatitis.
Opioid agonists may cause spasm of the sphincter of Oddi, which may increase biliary tract pressure. Other opioid-induced effects may include a reduction in biliary and pancreatic secretions and transient elevations in serum amylase. Patients with biliary tract disease (including acute pancreatitis) should be regularly evaluated for worsening symptoms. Therapy with opioids should be administered cautiously in patients with biliary tract disease, gallbladder disease, or acute pancreatitis.
Prematurity/Underweight in Infancy
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Prematurity/Underweight in Infancy.
The use of narcotic (opioid) analgesic agents is contraindicated in premature infants. These agents may cross the immature blood-brain barrier to a greater extent than in adults, resulting in disproportionate respiratory depression.
Prostate Tumor, Benign
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Prostate Tumor, Benign.
Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.
Psychiatric Disorders
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Psychiatric Disorders.
Phenylpropanolamine may precipitate or exacerbate psychotic symptoms, particularly at high dosages. Therapy with phenylpropanolamine should be administered cautiously in patients with a history of psychiatric disorders.
Psychosis
Moderate:
Alphen Expectorant
The phenylpropanolamine in Alphen Expectorant has a moderate potential interaction with Psychosis.
Phenylpropanolamine may precipitate or exacerbate psychotic symptoms, particularly at high dosages. Therapy with phenylpropanolamine should be administered cautiously in patients with a history of psychiatric disorders.
Pulmonary Impairment
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Pulmonary Impairment.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Moderate:
idelalisib
Idelalisib has a moderate potential interaction with Pulmonary Impairment.
The use of certain multikinase inhibitors has been associated with pulmonary toxicity. Serious cases of interstitial lung disease (ILD), including fatal cases and interstitial pneumonitis or pulmonary fibrosis have been reported. Caution is recommended when using these agents in patients with a history of interstitial pneumonitis or pulmonary fibrosis or those patients presenting with acute onset of new or progressive unexplained pulmonary symptoms such as dyspnea, cough, and fever pending diagnostic evaluation. If ILD is confirmed, these agents should be permanently discontinued and appropriate measures should be instituted. Treatment should be immediately withheld in patients diagnosed with ILD/pneumonitis and permanently discontinued if no other potential causes of ILD/pneumonitis have been identified.
Renal Dysfunction
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Renal Dysfunction.
Although narcotic (opioid) analgesic agents are generally metabolized by the liver, renal impairment can alter the elimination of these agents and their metabolites (some of which are pharmacologically active), resulting in drug accumulation and increased risk of toxicity. Therapy with opioids should be administered cautiously and initiated at reduced dosages in patients with significantly impaired renal function. Subsequent doses should be titrated based on individual response rather than a fixed dosing schedule.
Respiratory Arrest
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Respiratory Arrest.
Opiate agonists may produce significant central nervous system and respiratory depression of varying duration, particularly when given in high dosages and/or by rapid intravenous administration. Apnea may result from decreased respiratory drive as well as increased airway resistance, and rigidity of respiratory muscles may occur during rapid IV administration or when these agents are used in the induction of anesthesia. At therapeutic analgesic dosages, the respiratory effects are usually not clinically important except in patients with preexisting pulmonary impairment. Therapy with opiate agonists should be avoided or administered with extreme caution and initiated at reduced dosages in patients with severe CNS depression; sleep apnea; hypoxia, anoxia, or hypercapnia; upper airway obstruction; chronic pulmonary insufficiency; a limited ventilatory reserve; or other respiratory disorders. In the presence of excessive respiratory secretions, the use of opiate agonists may also be problematic because they decrease ciliary activity and reduce the cough reflex. Caution is also advised in patients who may be at increased risk for respiratory depression, such as comatose patients or those with head injury, intracranial lesions, or intracranial hypertension. Clinical monitoring of pulmonary function is recommended, and equipment for resuscitation should be immediately available if parenteral or neuraxial routes are used. Naloxone may be administered to reverse clinically significant respiratory depression, which may be prolonged depending on the opioid agent, cumulative dose, and route of administration.
Seizures
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Seizures.
Narcotic (opioid) analgesic agents may increase the frequency of seizures in patients with seizure disorders, may increase the risk of seizures occurring in other clinical settings associated with seizures, and, at higher dosages, have been reported to induce seizures in patients without history of seizures. Patients with history of seizure disorders should be regularly evaluated for worsened seizure control during therapy. Prolonged meperidine use may increase the risk of toxicity (e.g., seizures) from the accumulation of the active metabolite (normeperidine).
Shock
Major:
Alphen Expectorant
The codeine in Alphen Expectorant has a major potential interaction with Shock.
Opiate agonists can induce vasodilation and significant hypotension, particularly when given in high dosages and/or by rapid intravenous administration. Opiate analgesics cause vasodilatation that may exacerbate hypotension and hypoperfusion and, therefore, are contraindicated in circulatory shock. At therapeutic analgesic dosages, ambulatory patients are more likely to experience dizziness and hypotension than patients who are confined to bed. However, orthostatic hypotension may occur in supine patients upon rising. Therapy with opiate agonists should be administered cautiously and initiated at reduced dosages in patients with hypovolemia, or a predisposition to hypotension. When given by intramuscular or subcutaneous administration, clinicians should also be aware that impaired perfusion in these patients may prevent complete absorption of the drug. With repeated injections, an excessive amount may be absorbed suddenly if normal circulation is reestablished.
Urinary Retention
Moderate:
Alphen Expectorant
The codeine in Alphen Expectorant has a moderate potential interaction with Urinary Retention.
Narcotic (opioid) analgesic agents may inhibit the urinary voiding reflex and increase the tone of the vesical sphincter in the bladder. Acute urinary retention requiring catheterization may occur, particularly in patients with prostatic hypertrophy or urethral stricture and in older adult patients. These agents may also decrease urine production via direct effects on the kidney and central stimulation of the release of vasopressin. Therapy with opioids should be administered cautiously in patients with or predisposed to urinary retention and/or oliguria. The effects on smooth muscle tone appear to be the most pronounced with morphine.
More resources
Alphen Expectorant
A total of 770 drugs are known to interact with Alphen Expectorant.
- Alphen expectorant is in the drug class upper respiratory combinations.
idelalisib
A total of 944 drugs are known to interact with idelalisib.
- Idelalisib is in the drug class PI3K inhibitors.
- Idelalisib is used to treat Chronic Lymphocytic Leukemia.
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
| No interaction information available. |
Further information
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