Drug Interaction Report
10 potential interactions and/or warnings found for the following 2 drugs:
- hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
- Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
Interactions between your drugs
pseudoephedrine methylene blue
Applies to: Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine), hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
CONTRAINDICATED: Indirect- or mixed-acting sympathomimetic amines may precipitate severe hypertensive reactions and hyperpyrexia in patients treated with monoamine oxidase inhibitors (MAOIs). Death has occurred in some reported cases. The mechanism involves a synergistic sympathomimetic effect due to enhanced norepinephrine storage in adrenergic neurons (MAOI activity) and increased liberation of catecholamines (indirect sympathomimetic activity). Although the interaction has primarily involved nonselective MAOIs, hypertensive crisis has been reported in a patient taking ephedrine with the recommended dosage of a selective MAO-B inhibitor.
MANAGEMENT: In general, indirect- and mixed-acting sympathomimetic agents should not be used concurrently with MAOIs or other agents that possess MAOI activity (e.g., furazolidone, methylene blue, procarbazine). At least 14 days should elapse between discontinuation of MAOI therapy and initiation of treatment with sympathomimetic agents.
References
- Pettinger WA, Soyangco FG, Oates JA (1968) "Inhibition of monoamine oxidase in man by furazolidone." Clin Pharmacol Ther, 9, p. 442-7
- Schulz R, Antonin KH, Hoffmann E, et al. (1989) "Tyramine kinetics and pressor sensitivity during monoamine oxidase inhibition by selegiline." Clin Pharmacol Ther, 46, p. 528-36
- Elis J, Laurence DR, Mattie H, Prichard BN (1967) "Modification by monoamine oxidase inhibitors of the effect of some sympathomimetics on blood pressure." Br Med J, 2, p. 75-8
- Davies B, Bannister R, Sever P (1978) "Pressor amines and monoamine-oxidase inhibitors for treatment of postural hypotension in autonomic failure: limitations and hazards." Lancet, 1, p. 172-5
- Goldberg LI (1964) "Monoamine oxidase inhibitors: adverse reactions and possible mechanisms." JAMA, 190, p. 456-62
- Horler AR, Wynne NA (1965) "Hypertensive crisis due to pargyline and metaraminol." Br Med J, 5459, p. 460-1
- Sjoqvist F (1965) "Psychotropic drugs (2) interaction between monoamine oxidase (MAO) inhibitors and other substances." Proc R Soc Med, 58, p. 967-78
- Harrison WM, McGrath PJ, Stewart JW, Quitkin F (1989) "MAOIs and hypertensive crises: the role of OTC drugs." J Clin Psychiatry, 50, p. 64-5
- Cuthbert MF, Greenberg MP, Morley SW (1969) "Cough and cold remedies: a potential danger to patients on monoamine oxidase inhibitors." Br Med J, 1, p. 404-6
- Humberstone PM (1969) "Hypertension from cold remedies." Br Med J, 1, p. 846
- Wright SP (1978) "Hazards with monoamine-oxidase inhibitors: a persistent problem." Lancet, 1, p. 284-5
- Schildkraut JJ, Klerman GL, Friend DG, Greenblatt M (1963) "Biochemical and pressor effects of oral d,l-dihydroxyphenylalanine in patients pretreated with antidepressant drugs." Ann N Y Acad Sci, 107, p. 1005-15
- Smookler S, Bermudez AJ (1982) "Hypertensive crisis resulting from an MAO inhibitor and an over-the-counter appetite suppressant." Ann Intern Med, 11, p. 482-4
- Mason AM, Buckle RM (1969) ""Cold" cures and monoamine-oxidase inhibitors." Br Med J, 1, p. 845-6
- Boakes AJ, Laurence DR, Teoh PC, Barar FS, Benedikter LT, Prichard BN (1973) "Interactions between sympathomimetic amines and antidepressant agents in man." Br Med J, 1, p. 311-5
- Goulet JP, Perusse R, Turcotte JY (1992) "Contraindications to vasoconstrictors in dentistry: Part III. Pharmacologic interactions." Oral Surg Oral Med Oral Pathol, 74, p. 692-7
- Ban TA (1975) "Drug interactions with psychoactive drugs." Dis Nerv Syst, 36, p. 164-6
- Lefebvre H, Noblet C, Morre N, Wolf LM (1995) "Pseudo-phaeochromocytoma after multiple drug interactions involving the selective monoamine oxidase inhibitor selegiline." Clin Endocrinol (Oxf), 42, p. 95-8
- Darcy PF, Griffin JP (1995) "Interactions with drugs used in the treatment of depressive illness." Adverse Drug React Toxicol Rev, 14, p. 211-31
- De Vita VT, Hahn MA, Oliverio VT (1965) "Monoamine oxidase inhibition by a new carcinostatic agent, n-isopropyl-a-(2-methylhydrazino)-p-toluamide (MIH). (30590)." Proc Soc Exp Biol Med, 120, p. 561-5
- Kraft KE, Dore FH (1996) "Computerized drug interaction programs: how reliable?." JAMA, 275, p. 1087
sodium biphosphate phenyl salicylate
Applies to: hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate, hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
MONITOR CLOSELY: The following interaction applies only to products containing sodium biphosphate that are used for bowel cleansing. It does not apply to products containing sodium biphosphate that are used for other, non-laxative related purposes.
Coadministration with agents that affect renal function or perfusion such as diuretics, ACE inhibitors, angiotensin receptor blockers, and nonsteroidal anti-inflammatory drugs (NSAIDs) may increase the risk of acute phosphate nephropathy associated with the use of bowel-cleansing phosphate solutions. The risk and/or severity of fluid and electrolyte disturbances may also be increased, which can lead to serious adverse events including cardiac arrhythmias, seizures, and renal impairment. Acute phosphate nephropathy is a rare adverse event that presents as acute renal failure with minimal proteinuria and a bland urine sediment. Renal biopsy findings are consistent with nephrocalcinosis and include acute and/or chronic renal tubular injury, calcium-phosphate crystal deposition in the distal tubules and collecting ducts, and no other pattern of histological injury. The risk of acute phosphate nephropathy stems from the large phosphate load, fluid shifts, and decreased intravascular volume, which can be exacerbated in the presence of medications that affect renal perfusion or function. In reported cases, acute renal failure was typically diagnosed within two to five months of colonoscopy. These cases often resulted in permanent impairment of renal function, some requiring long-term dialysis.
MANAGEMENT: Caution is advised when bowel-cleansing phosphate preparations are prescribed in patients treated with agents that affect renal function or perfusion, particularly if they are frail or elderly. Bowel-cleansing phosphate preparations should not be used in patients who have impaired renal function or perfusion, dehydration, or uncorrected electrolyte abnormalities. In patients at risk for acute phosphate nephropathy, baseline and postprocedure labs including serum electrolytes, calcium, phosphate, BUN, and creatinine should be performed. Patients should be advised not to exceed the recommended dosage of their bowel-cleansing preparation and to drink sufficient quantities of clear fluids during before, during, and after bowel cleansing. Limited data suggest that administration of an electrolyte rehydration solution may attenuate the electrolyte abnormalities and hypovolemia. Hospitalization and intravenous fluid hydration may be appropriate for frail or elderly patients who may be unable to drink an adequate volume of fluid.
References
- (2007) "Product Information. Fleet Phospho Soda (sodium acid phophate-sodium phosphate)." Fleet, CB
- (2007) "Product Information. Visicol (sodium acid phophate-sodium phosphate)." Salix Pharmaceuticals
- FDA. Food and Drug Admnistration (2007) Oral sodium phosphate products for bowel cleansing. http://www.fda.gov/cder/drug/InfoSheets/HCP/OSP_solutionHCP.pdf
methylene blue doxylamine
Applies to: hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate, Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
CONTRAINDICATED: Monoamine oxidase inhibitors (MAOIs) may prolong or intensify the anticholinergic and CNS-depressant effects of doxylamine. In addition, concomitant use may potentiate the risk of serotonin syndrome, which is a rare but serious and potentially fatal condition thought to result from hyperstimulation of brainstem 5-HT1A and 2A receptors. Symptoms of the serotonin syndrome may include mental status changes such as irritability, altered consciousness, confusion, hallucination, and coma; autonomic dysfunction such as tachycardia, hyperthermia, diaphoresis, shivering, blood pressure lability, and mydriasis; neuromuscular abnormalities such as hyperreflexia, myoclonus, tremor, rigidity, and ataxia; and gastrointestinal symptoms such as abdominal cramping, nausea, vomiting, and diarrhea.
MANAGEMENT: The use of doxylamine in combination with MAOIs or other agents that possess MAOI activity (e.g., furazolidone, linezolid, methylene blue, procarbazine) is considered contraindicated. At least 14 days should elapse between discontinuation of MAOI therapy and initiation of treatment with doxylamine.
References
- Skop BP, Finkelstein JA, Mareth TR, Magoon MR, Brown TM (1994) "The serotonin syndrome associated wtih paroxetine, an over-the-counter cold remedy, and vascular disease." Am J Emerg Med, 12, p. 642-4
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- (2013) "Product Information. Diclegis (doxylamine-pyridoxine)." Duchesnay USA Inc
- (2013) "Product Information. Diclectin (doxylamine-pyridoxine)." Duchesnay Inc
hyoscyamine doxylamine
Applies to: hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate, Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
MONITOR: Agents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic antidepressants; disopyramide) may have additive effects when used in combination. Excessive parasympatholytic effects may result in paralytic ileus, hyperthermia, heat stroke, and the anticholinergic intoxication syndrome. Peripheral symptoms of intoxication commonly include mydriasis, blurred vision, flushed face, fever, dry skin and mucous membranes, tachycardia, urinary retention, and constipation. Central symptoms may include memory loss, disorientation, incoherence, hallucinations, psychosis, delirium, hyperactivity, twitching or jerking movements, stereotypy, and seizures. Central nervous system-depressant effects may also be additively or synergistically increased when these agents are combined, especially in elderly or debilitated patients. Use of neuroleptics in combination with other neuroleptics or anticholinergic agents may increase the risk of tardive dyskinesia. In addition, some neuroleptics and tricyclic antidepressants may cause prolongation of the QT interval and theoretically, concurrent use of two or more drugs that can cause QT interval prolongation may result in additive effects and increased risk of ventricular arrhythmias including torsade de pointes and sudden death.
MANAGEMENT: Caution is advised when agents with anticholinergic properties are combined, particularly in the elderly and those with underlying organic brain disease, who tend to be more sensitive to the central anticholinergic effects of these drugs and in whom toxicity symptoms may be easily overlooked. Patients should be advised to notify their physician promptly if they experience potential symptoms of anticholinergic intoxication such as abdominal pain, fever, heat intolerance, blurred vision, confusion, and/or hallucinations. Ambulatory patients should be counseled to avoid activities requiring mental alertness until they know how these agents affect them. A reduction in anticholinergic dosages may be necessary if excessive adverse effects develop.
References
- Stadnyk AN, Glezos JD (1983) "Drug-induced heat stroke." Can Med Assoc J, 128, p. 957-9
- Zelman S, Guillan R (1970) "Heat stroke in phenothiazine-treated patients: a report of three fatalities." Am J Psychiatry, 126, p. 1787-90
- Mann SC, Boger WP (1978) "Psychotropic drugs, summer heat and humidity, and hyperplexia: a danger restated." Am J Psychiatry, 135, p. 1097-100
- Warnes H, Lehmann HE, Ban TA (1967) "Adynamic ileus during psychoactive medication: a report of three fatal and five severe cases." Can Med Assoc J, 96, p. 1112-3
- Gershon S, Neubauer H, Sundland DM (1965) "Interaction between some anticholinergic agents and phenothiazines." Clin Pharmacol Ther, 6, p. 749-56
- Sarnquist F, Larson CP Jr (1973) "Drug-induced heat stroke." Anesthesiology, 39, p. 348-50
- Johnson AL, Hollister LE, Berger PA (1981) "The anticholinergic intoxication syndrome: diagnosis and treatment." J Clin Psychiatry, 42, p. 313-7
- Lee BS (1986) "Possibility of hyperpyrexia with antipsychotic and anticholinergic drugs." J Clin Psychiatry, 47, p. 571
- Forester D (1978) "Fatal drug-induced heat stroke." JACEP, 7, p. 243-4
- Moreau A, Jones BD, Banno V (1986) "Chronic central anticholinergic toxicity in manic depressive illness mimicking dementia." Can J Psychiatry, 31, p. 339-41
- Hvizdos AJ, Bennett JA, Wells BG, Rappaport KB, Mendel SA (1983) "Anticholinergic psychosis in a patient receiving usual doses of haloperidol." Clin Pharm, 2, p. 174-8
- Cohen MA, Alfonso CA, Mosquera M (1994) "Development of urinary retention during treatment with clozapine and meclizine [published erratum appears in Am J Psychiatry 1994 Jun;151(6):952]." Am J Psychiatry, 151, p. 619-20
- (2001) "Product Information. Cogentin (benztropine)." Merck & Co., Inc
- Kulik AV, Wilbur R (1982) "Delirium and stereotypy from anticholinergic antiparkinson drugs." Prog Neuropsychopharmacol Biol Psychiatry, 6, p. 75-82
- (2001) "Product Information. Artane (trihexyphenidyl)." Lederle Laboratories
acetaminophen hyoscyamine
Applies to: Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine), hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
Anticholinergic agents may delay and/or decrease the gastrointestinal absorption of acetaminophen by reducing gastric motility and delaying gastric emptying. However, the clinical relevance is probably minimal.
References
- Nimmo J, Heading RC, Tothill P, Prescott LF (1973) "Pharmacological modification of gastric emptying: effects of propantheline and metoclopramide on paracetamol absorption." Br Med J, 1, p. 587-9
- Clark JM, Seager SJ (1983) "Gastric emptying following premedication with glycopyrrolate or atropine." Br J Anaesth, 55, p. 1195-9
- "Product Information. Transderm-Scop (scopolamine)." Ciba Self-Medication Inc
Drug and food interactions
acetaminophen food
Applies to: Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
GENERALLY AVOID: Chronic, excessive consumption of alcohol may increase the risk of acetaminophen-induced hepatotoxicity, which has included rare cases of fatal hepatitis and frank hepatic failure requiring liver transplantation. The proposed mechanism is induction of hepatic microsomal enzymes during chronic alcohol use, which may result in accelerated metabolism of acetaminophen and increased production of potentially hepatotoxic metabolites.
MANAGEMENT: In general, chronic alcoholics should avoid regular or excessive use of acetaminophen. Alternative analgesic/antipyretic therapy may be appropriate in patients who consume three or more alcoholic drinks per day. However, if acetaminophen is used, these patients should be cautioned not to exceed the recommended dosage (maximum 4 g/day in adults and children 12 years of age or older).
References
- Kaysen GA, Pond SM, Roper MH, Menke DJ, Marrama MA (1985) "Combined hepatic and renal injury in alcoholics during therapeutic use of acetaminophen." Arch Intern Med, 145, p. 2019-23
- O'Dell JR, Zetterman RK, Burnett DA (1986) "Centrilobular hepatic fibrosis following acetaminophen-induced hepatic necrosis in an alcoholic." JAMA, 255, p. 2636-7
- Seeff LB, Cuccherini BA, Zimmerman HJ, Adler E, Benjamin SB (1986) "Acetaminophen hepatotoxicity in alcoholics." Ann Intern Med, 104, p. 399-404
- Thummel KE, Slattery JT, Nelson SD (1988) "Mechanism by which ethanol diminishes the hepatotoxicity of acetaminophen." J Pharmacol Exp Ther, 245, p. 129-36
- McClain CJ, Kromhout JP, Peterson FJ, Holtzman JL (1980) "Potentiation of acetaminophen hepatotoxicity by alcohol." JAMA, 244, p. 251-3
- Kartsonis A, Reddy KR, Schiff ER (1986) "Alcohol, acetaminophen, and hepatic necrosis." Ann Intern Med, 105, p. 138-9
- Prescott LF, Critchley JA (1983) "Drug interactions affecting analgesic toxicity." Am J Med, 75, p. 113-6
- (2002) "Product Information. Tylenol (acetaminophen)." McNeil Pharmaceutical
- Whitcomb DC, Block GD (1994) "Association of acetaminopphen hepatotoxicity with fasting and ethanol use." JAMA, 272, p. 1845-50
- Bonkovsky HL (1995) "Acetaminophen hepatotoxicity, fasting, and ethanol." JAMA, 274, p. 301
- Nelson EB, Temple AR (1995) "Acetaminophen hepatotoxicity, fasting, and ethanol." JAMA, 274, p. 301
- Zimmerman HJ, Maddrey WC (1995) "Acetaminophen (paracetamol) hepatotoxicity with regular intake of alcohol: analysis of instances of therapeutic misadventure." Hepatology, 22, p. 767-73
sodium biphosphate food
Applies to: hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
ADJUST DOSING INTERVAL: Bowel cleansing products can increase the gastrointestinal transit rate. Oral medications administered within one hour of the start of administration of the bowel cleansing solution may be flushed from the gastrointestinal tract and not properly absorbed.
MANAGEMENT: Patients should be advised that absorption of oral medications may be impaired during bowel cleansing treatment. Oral medications (e.g., anticonvulsants, oral contraceptives, antidiabetic agents, antibiotics) should not be administered during and within one hour of starting bowel cleansing treatment whenever possible. However, if concomitant use cannot be avoided, monitoring for reduced therapeutic effects may be advisable.
References
- "Product Information. Golytely (polyethylene glycol 3350 with electrolytes)." Braintree
- (2022) "Product Information. Prepopik (citric acid/Mg oxide/Na picosulfate)." Ferring Pharmaceuticals Inc
doxylamine food
Applies to: Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled 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
- Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
- Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
- (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
- (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc
hyoscyamine food
Applies to: hyoscyamine / methenamine / methylene blue / phenyl salicylate / sodium biphosphate
GENERALLY AVOID: Use of anticholinergic agents with alcohol may result in sufficient impairment of attention so as to render driving and operating machinery more hazardous. In addition, the potential for abuse may be increased with the combination. The mechanism of interaction is not established but may involve additive depressant effects on the central nervous system. No effect of oral propantheline or atropine on blood alcohol levels was observed in healthy volunteers when administered before ingestion of a standard ethanol load. However, one study found impairment of attention in subjects given atropine 0.5 mg or glycopyrrolate 1 mg in combination with alcohol.
MANAGEMENT: Alcohol should generally be avoided during therapy with anticholinergic agents. Patients should be counseled to avoid activities requiring mental alertness until they know how these agents affect them.
References
- Linnoila M (1973) "Drug effects on psychomotor skills related to driving: interaction of atropine, glycopyrrhonium and alcohol." Eur J Clin Pharmacol, 6, p. 107-12
pseudoephedrine food
Applies to: Tylenol Sinus NightTime (acetaminophen / doxylamine / pseudoephedrine)
MONITOR: Coadministration of two or more sympathomimetic agents may increase the risk of adverse effects such as nervousness, irritability, and increased heart rate. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic agents. 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 agents are coadministered. Pulse and blood pressure should be closely monitored.
References
- 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
- (2002) "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company
Therapeutic duplication warnings
No duplication warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
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. |
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