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Drug Interactions between Quadrinal and Urolet MB

This report displays the potential drug interactions for the following 2 drugs:

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Major

ePHEDrine methylene blue

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Urolet MB (hyoscyamine / methenamine / methylene blue / 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

  1. Pettinger WA, Soyangco FG, Oates JA (1968) "Inhibition of monoamine oxidase in man by furazolidone." Clin Pharmacol Ther, 9, p. 442-7
  2. 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
  3. 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
  4. 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
  5. Goldberg LI (1964) "Monoamine oxidase inhibitors: adverse reactions and possible mechanisms." JAMA, 190, p. 456-62
  6. Horler AR, Wynne NA (1965) "Hypertensive crisis due to pargyline and metaraminol." Br Med J, 5459, p. 460-1
  7. Sjoqvist F (1965) "Psychotropic drugs (2) interaction between monoamine oxidase (MAO) inhibitors and other substances." Proc R Soc Med, 58, p. 967-78
  8. 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
  9. 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
  10. Humberstone PM (1969) "Hypertension from cold remedies." Br Med J, 1, p. 846
  11. Wright SP (1978) "Hazards with monoamine-oxidase inhibitors: a persistent problem." Lancet, 1, p. 284-5
  12. 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
  13. 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
  14. Mason AM, Buckle RM (1969) ""Cold" cures and monoamine-oxidase inhibitors." Br Med J, 1, p. 845-6
  15. 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
  16. 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
  17. Ban TA (1975) "Drug interactions with psychoactive drugs." Dis Nerv Syst, 36, p. 164-6
  18. 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
  19. Darcy PF, Griffin JP (1995) "Interactions with drugs used in the treatment of depressive illness." Adverse Drug React Toxicol Rev, 14, p. 211-31
  20. 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
  21. Kraft KE, Dore FH (1996) "Computerized drug interaction programs: how reliable?." JAMA, 275, p. 1087
View all 21 references

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Moderate

theophylline PHENobarbital

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

MONITOR: Barbiturates may decrease serum levels and therapeutic effects of the methylxanthines. The mechanism is barbiturate induction of CYP450 3A4 and 1A2 hepatic metabolism of methylxanthines.

MANAGEMENT: Close observation for clinical and laboratory evidence of decreased methylxanthine effect is indicated if these drugs must be used together. Patients should be advised to notify their physician if they experience a worsening of their respiratory symptoms.

References

  1. Upton RA (1991) "Pharmacokinetic interactions between theophylline and other medication (Part I)." Clin Pharmacokinet, 20, p. 66-80
  2. Bukowskyj M, Nakatsu K, Munt PW (1984) "Theophylline reassessed." Ann Intern Med, 101, p. 63-73
  3. Landay RA, Gonzalez MA, Taylor JC (1978) "Effect of phenobarbital on theophylline disposition." J Allergy Clin Immunol, 62, p. 27-9
  4. Dahlqvist R, Steiner E, Koike Y, von Bahr C, Lind M, Billing B (1989) "Induction of theophylline metabolism by pentobarbital." Ther Drug Monit, 11, p. 408-10
View all 4 references

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Moderate

theophylline sodium biphosphate

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Urolet MB (hyoscyamine / methenamine / methylene blue / sodium biphosphate)

MONITOR: 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.

The risk of seizures induced by the use of bowel cleansing preparations may be increased in patients on concomitant medications that can lower the seizure threshold such as selective serotonin reuptake inhibitors (SSRI antidepressants or anorectics), monoamine oxidase inhibitors, neuroleptic agents, central nervous system stimulants, opioids, tricyclic antidepressants, other tricyclic compounds (e.g., cyclobenzaprine, phenothiazines), systemic steroids, carbapenems, cholinergic agents, fluoroquinolones, interferons, chloroquine, mefloquine, lindane, and theophylline. Rare cases of generalized tonic-clonic seizures and/or loss of consciousness in association with low serum osmolality and electrolyte abnormalities (e.g., hyponatremia, hypokalemia, hypocalcemia, hypomagnesemia) have been reported with the use of bowel cleansing products in patients with no prior history of seizures. The condition resolved with correction of fluid and electrolyte abnormalities.

MANAGEMENT: Caution is advised when bowel cleansing preparations are prescribed in patients treated with agents that can lower the seizure threshold. Bowel cleansing preparations should not be used if these patients have impaired renal function or perfusion, dehydration, or uncorrected electrolyte abnormalities. Baseline and postprocedure labs including serum electrolytes, calcium, phosphate, BUN, and creatinine should be considered, particularly in the elderly. Patients should be advised not to exceed the recommended dosage of their bowel cleansing preparation and to drink sufficient quantities of clear fluids before, during, and after the bowel preparation process. Administration of an electrolyte rehydration solution may help attenuate the electrolyte abnormalities and hypovolemia.

References

  1. Salik JM, Kurtin P (1985) "Severe hyponatremia after colonoscopy preparation in a patient with the acquired immune deficiency syndrome." Am J Gastroenterol, 80, p. 177-9
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  3. (2007) "Product Information. Fleet Phospho Soda (sodium acid phophate-sodium phosphate)." Fleet, CB
  4. (2007) "Product Information. Visicol (sodium acid phophate-sodium phosphate)." Salix Pharmaceuticals
  5. Cerner Multum, Inc. "Australian Product Information."
View all 5 references

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Moderate

ePHEDrine sodium biphosphate

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Urolet MB (hyoscyamine / methenamine / methylene blue / sodium biphosphate)

MONITOR: 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.

The risk of seizures induced by the use of bowel cleansing preparations may be increased in patients on concomitant medications that can lower the seizure threshold such as selective serotonin reuptake inhibitors (SSRI antidepressants or anorectics), monoamine oxidase inhibitors, neuroleptic agents, central nervous system stimulants, opioids, tricyclic antidepressants, other tricyclic compounds (e.g., cyclobenzaprine, phenothiazines), systemic steroids, carbapenems, cholinergic agents, fluoroquinolones, interferons, chloroquine, mefloquine, lindane, and theophylline. Rare cases of generalized tonic-clonic seizures and/or loss of consciousness in association with low serum osmolality and electrolyte abnormalities (e.g., hyponatremia, hypokalemia, hypocalcemia, hypomagnesemia) have been reported with the use of bowel cleansing products in patients with no prior history of seizures. The condition resolved with correction of fluid and electrolyte abnormalities.

MANAGEMENT: Caution is advised when bowel cleansing preparations are prescribed in patients treated with agents that can lower the seizure threshold. Bowel cleansing preparations should not be used if these patients have impaired renal function or perfusion, dehydration, or uncorrected electrolyte abnormalities. Baseline and postprocedure labs including serum electrolytes, calcium, phosphate, BUN, and creatinine should be considered, particularly in the elderly. Patients should be advised not to exceed the recommended dosage of their bowel cleansing preparation and to drink sufficient quantities of clear fluids before, during, and after the bowel preparation process. Administration of an electrolyte rehydration solution may help attenuate the electrolyte abnormalities and hypovolemia.

References

  1. Salik JM, Kurtin P (1985) "Severe hyponatremia after colonoscopy preparation in a patient with the acquired immune deficiency syndrome." Am J Gastroenterol, 80, p. 177-9
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  3. (2007) "Product Information. Fleet Phospho Soda (sodium acid phophate-sodium phosphate)." Fleet, CB
  4. (2007) "Product Information. Visicol (sodium acid phophate-sodium phosphate)." Salix Pharmaceuticals
  5. Cerner Multum, Inc. "Australian Product Information."
View all 5 references

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Moderate

PHENobarbital methylene blue

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Urolet MB (hyoscyamine / methenamine / methylene blue / sodium biphosphate)

MONITOR: Limited clinical data suggest that nonselective monoamine oxidase inhibitors (MAOIs) may enhance or prolong the central nervous system effects of barbiturates. The mechanism of interaction is unknown, but may involve inhibition of barbiturate metabolism by MAOIs. Somnolence, dizziness, ataxia, and semi-consciousness have been reported.

MANAGEMENT: Until more information is available, patients should be monitored for increased barbiturate effects during coadministration with an MAOI or other agents that possess MAOI activity such as furazolidone, linezolid, methylene blue, and procarbazine.

References

  1. Sjoqvist F (1965) "Psychotropic drugs (2) interaction between monoamine oxidase (MAO) inhibitors and other substances." Proc R Soc Med, 58, p. 967-78
  2. Domino EF, Sullivan TS, Luby ED (1962) "Barbiturate intoxication in a patient treated with a MAO inhibitor." Am J Psychiatry, 118, p. 941-3
  3. Darcy PF, Griffin JP (1995) "Interactions with drugs used in the treatment of depressive illness." Adverse Drug React Toxicol Rev, 14, p. 211-31

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Minor

theophylline ePHEDrine

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline) and Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

Ephedrine-methylxanthine combinations are used for the treatment of asthma but the efficacy of the combination has been questioned. This combination may lead to increased xanthine side effects. The mechanism is unknown, but may be related to synergistic pharmacologic effects. Patients using this combination should be closely monitored for side effects such as nausea, vomiting, tachycardia, nervousness, or insomnia. If side effects are noted, the dosage of the xanthine may need to be decreased.

References

  1. Weinberger M, Bronsky E, Bensch GW, Bock GN, Yecies JJ (1975) "Interaction of ephedrine and theophylline." Clin Pharmacol Ther, 17, p. 585-92
  2. Sims JA, doPico GA, Reed CE (1978) "Bronchodilating effect of oral theophylline-ephedrine combination." J Allergy Clin Immunol, 62, p. 15-21
  3. Tinkelman DG, Avner SE (1977) "Ephedrine therapy in asthmatic children. Clinical tolerance and absence of side effects." JAMA, 237, p. 553-7
  4. Weinberger MM, Brousky EA (1974) "Evaluation of oral bronchodilator therapy in asthmatic children: bronchodilators in asthmatic children." J Pediatr, 84, p. 421-7
  5. Badiei B, Faciane J, Sly M (1975) "Effect of throphylline, ephedrine and theri combination upon exercise-induced airway obstruction." Ann Allergy, 35, p. 32-6
View all 5 references

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Drug and food interactions

Major

PHENobarbital food

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

GENERALLY AVOID: Concurrent acute use of barbiturates and ethanol may result in additive CNS effects, including impaired coordination, sedation, and death. Tolerance of these agents may occur with chronic use. The mechanism is related to inhibition of microsomal enzymes acutely and induction of hepatic microsomal enzymes chronically.

MANAGEMENT: The combination of ethanol and barbiturates should be avoided.

References

  1. Gupta RC, Kofoed J (1966) "Toxological statistics for barbiturates, other sedatives, and tranquilizers in Ontario: a 10-year survey." Can Med Assoc J, 94, p. 863-5
  2. Misra PS, Lefevre A, Ishii H, Rubin E, Lieber CS (1971) "Increase of ethanol, meprobamate and pentobarbital metabolism after chronic ethanol administration in man and in rats." Am J Med, 51, p. 346-51
  3. Saario I, Linnoila M (1976) "Effect of subacute treatment with hypnotics, alone or in combination with alcohol, on psychomotor skills related to driving." Acta Pharmacol Toxicol (Copenh), 38, p. 382-92
  4. Stead AH, Moffat AC (1983) "Quantification of the interaction between barbiturates and alcohol and interpretation of fatal blood concentrations." Hum Toxicol, 2, p. 5-14
  5. Seixas FA (1979) "Drug/alcohol interactions: avert potential dangers." Geriatrics, 34, p. 89-102
View all 5 references

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Moderate

theophylline food

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

GENERALLY AVOID: Coadministration with caffeine may increase the serum concentrations of theophylline. The proposed mechanism involves competitive inhibition of theophylline metabolism via CYP450 1A2, as well as metabolic conversion of caffeine to theophylline in vivo and saturation of theophylline metabolism at higher serum concentrations. In six healthy male volunteers (all smokers), serum concentrations of theophylline (administered as aminophylline 400 mg single oral dose) were significantly higher following consumption of caffeine (2 to 7 cups of instant coffee over 24 hours, equivalent to approximately 120 to 630 mg of caffeine) than after caffeine deprivation for 48 hours. Caffeine consumption also increased the apparent elimination half-life of theophylline by an average of 32% and reduced its total body clearance by 23%. In another study, steady-state concentration and area under the concentration-time curve of theophylline (1200 mg intravenously over 24 hours) increased by 23% and 40%, respectively, in eight healthy volunteers following administration of caffeine (300 mg orally three times a day).

MANAGEMENT: Given the narrow therapeutic index of theophylline, patients should limit or avoid significant fluctuations in their intake of pharmacologic as well as dietary caffeine.

ADJUST DOSING INTERVAL: Administration of theophylline with continuous enteral nutrition may reduce the serum levels or the rate of absorption of theophylline. The mechanism has not been reported. In one case, theophylline levels decreased by 53% in a patient receiving continuous nasogastric tube feedings and occurred with both theophylline tablet and liquid formulations, but not with intravenous aminophylline.

MANAGEMENT: When administered to patients receiving continuous enteral nutrition , some experts recommend that the tube feeding should be interrupted for at least 1 hour before and 1 hour after the dose of theophylline is given; rapid-release formulations are preferable, and theophylline levels should be monitored.

References

  1. Jonkman JH, Sollie FA, Sauter R, Steinijans VW (1991) "The influence of caffeine on the steady-state pharmacokinetics of theophylline." Clin Pharmacol Ther, 49, p. 248-55
  2. Sato J, Nakata H, Owada E, Kikuta T, Umetsu M, Ito K (1993) "Influence of usual intake of dietary caffeine on single-dose kinetics of theophylline in healthy human subjects." Eur J Clin Pharmacol, 44, p. 295-8
  3. Wohlt PD, Zheng L, Gunderson S, Balzar SA, Johnson BD, Fish JT (2009) "Recommendations for the use of medications with continuous enteral nutrition." Am J Health Syst Pharm, 66, p. 1438-67

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Moderate

sodium biphosphate food

Applies to: Urolet MB (hyoscyamine / methenamine / methylene blue / 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

  1. "Product Information. Golytely (polyethylene glycol 3350 with electrolytes)." Braintree
  2. (2022) "Product Information. Prepopik (citric acid/Mg oxide/Na picosulfate)." Ferring Pharmaceuticals Inc

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Moderate

hyoscyamine food

Applies to: Urolet MB (hyoscyamine / methenamine / methylene blue / 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

  1. 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

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Moderate

theophylline food

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

GENERALLY AVOID: Coadministration with caffeine may increase the serum concentrations of theophylline. The proposed mechanism involves competitive inhibition of theophylline metabolism via CYP450 1A2, as well as metabolic conversion of caffeine to theophylline in vivo and saturation of theophylline metabolism at higher serum concentrations. In six healthy male volunteers (all smokers), serum concentrations of theophylline (administered as aminophylline 400 mg single oral dose) were significantly higher following consumption of caffeine (2 to 7 cups of instant coffee over 24 hours, equivalent to approximately 120 to 630 mg of caffeine) than after caffeine deprivation for 48 hours. Caffeine consumption also increased the apparent elimination half-life of theophylline by an average of 32% and reduced its total body clearance by 23%. In another study, steady-state concentration and area under the concentration-time curve of theophylline (1200 mg intravenously over 24 hours) increased by 23% and 40%, respectively, in eight healthy volunteers following administration of caffeine (300 mg orally three times a day).

MANAGEMENT: Given the narrow therapeutic index of theophylline, patients should limit or avoid significant fluctuations in their intake of pharmacologic as well as dietary caffeine.

References

  1. Jonkman JH, Sollie FA, Sauter R, Steinijans VW (1991) "The influence of caffeine on the steady-state pharmacokinetics of theophylline." Clin Pharmacol Ther, 49, p. 248-55
  2. Sato J, Nakata H, Owada E, Kikuta T, Umetsu M, Ito K (1993) "Influence of usual intake of dietary caffeine on single-dose kinetics of theophylline in healthy human subjects." Eur J Clin Pharmacol, 44, p. 295-8

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Moderate

ePHEDrine food

Applies to: Quadrinal (ephedrine / phenobarbital / potassium iodide / theophylline)

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

  1. 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
  2. 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
  3. (2001) "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc
  4. (2001) "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals
  5. (2001) "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals
  6. (2001) "Product Information. Focalin (dexmethylphenidate)." Mikart Inc
  7. (2002) "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company
View all 7 references

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Therapeutic duplication warnings

No 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.

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

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