Drug Interactions between famotidine / ibuprofen and letermovir
This report displays the potential drug interactions for the following 2 drugs:
- famotidine/ibuprofen
- letermovir
Interactions between your drugs
ibuprofen letermovir
Applies to: famotidine / ibuprofen and letermovir
MONITOR: Coadministration with letermovir may decrease the plasma concentrations of drugs that are metabolized by CYP450 2C9 and/or 2C19. The interaction has been studied with voriconazole, a substrate of CYP450 2C9 and 2C19. According to the product labeling, voriconazole peak plasma concentration (Cmax), systemic exposure (AUC) and concentration at 12 hours postdose (C12hr) decreased by an average of 39%, 44% and 51%, respectively, when voriconazole 200 mg orally twice daily was coadministered with letermovir 480 mg orally once daily.
MANAGEMENT: Caution is advised when letermovir is used concomitantly with drugs that are substrates of CYP450 2C9 and/or 2C19, particularly those with a narrow therapeutic range. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever letermovir is added to or withdrawn from therapy.
References
- (2017) "Product Information. Prevymis (letermovir)." Merck & Co., Inc
ibuprofen famotidine
Applies to: famotidine / ibuprofen and famotidine / ibuprofen
H2 antagonists may alter the disposition of nonsteroidal anti-inflammatory drugs (NSAIDs), resulting in increased or decreased plasma concentrations. Data are varied, even for the same NSAID. The mechanism may be related to inhibition of metabolism, changes in gastric pH that decrease absorption, and/or reduced urinary elimination. Statistically significant changes have been small and of limited clinical significance. Clinical monitoring of patient response and tolerance is recommended.
References
- Said SA, Foda AM (1989) "Influence of cimetidine on the pharmacokinetics of piroxicam in rat and man." Arzneimittelforschung, 39, p. 790-2
- Scavone JM, Greenblatt DJ, Matlis R, Harmatz JS (1986) "Interaction of oxaprozin with acetaminophen, cimetidine, and ranitidine." Eur J Clin Pharmacol, 31, p. 371-4
- (2001) "Product Information. Daypro (oxaprozin)." Searle
Drug and food interactions
ibuprofen food
Applies to: famotidine / ibuprofen
GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.
MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.
References
- (2002) "Product Information. Motrin (ibuprofen)." Pharmacia and Upjohn
famotidine food
Applies to: famotidine / ibuprofen
H2 antagonists may reduce the clearance of nicotine. Cimetidine, 600 mg given twice a day for two days, reduced clearance of an intravenous nicotine dose by 30%. Ranitidine, 300 mg given twice a day for two days, reduced clearance by 10%. The clinical significance of this interaction is not known. Patients should be monitored for increased nicotine effects when using the patches or gum for smoking cessation and dosage adjustments should be made as appropriate.
References
- Bendayan R, Sullivan JT, Shaw C, Frecker RC, Sellers EM (1990) "Effect of cimetidine and ranitidine on the hepatic and renal elimination of nicotine in humans." Eur J Clin Pharmacol, 38, p. 165-9
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.
See also
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
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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