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Drug Interactions between celecoxib and st. john's wort

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

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Interactions between your drugs

Moderate

celecoxib St. John's wort

Applies to: celecoxib and st. john's wort

MONITOR: Coadministration with inducers of CYP450 2C9 may decrease the plasma concentrations of celecoxib, which is primarily metabolized by the isoenzyme. When a single 200 mg dose of celecoxib was administered to 12 healthy volunteers following pretreatment with the moderate CYP450 2C9 inducer rifampin 600 mg once daily for 5 days, celecoxib peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by 56% and 64%, respectively, while clearance increased by 185%. Reduced efficacy of celecoxib may occur.

MANAGEMENT: The potential for diminished pharmacologic effects of celecoxib should be considered during coadministration with CYP450 2C9 inducers. Dose adjustments or alternative treatments may be required if an interaction is suspected.

References

  1. Jayasagar G, Krishna Kumar M, Chandrasekhar K, Madhusudan Rao Y (2003) "Influence of rifampicin pretreatment on the pharmacokinetics of celecoxib in healthy male volunteers." Drug Metabol Drug Interact, 19, p. 287-95
  2. (2022) "Product Information. Seglentis (celecoxib-tramadol)." Kowa Pharmaceuticals America (formerly ProEthic)

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Drug and food interactions

Moderate

St. John's wort food

Applies to: st. john's wort

GENERALLY AVOID: An isolated case report suggests that foods containing large amounts of tyramine may precipitate a hypertensive crisis in patients treated with St. John's wort. The mechanism of interaction is unknown, as St. John's wort is not thought to possess monoamine oxidase (MAO) inhibiting activity at concentrations achieved in vivo. The case patient was a 41-year-old man who had been taking St. John's wort for seven days prior to presentation at the emergency room with confusion and disorientation. The patient recalled last eating aged cheese and having a glass of red wine approximately 10 hours prior to admission. No other cause of delirium or hypertension could be identified. In addition, alcohol may potentiate some of the pharmacologic effects of St. John's wort. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.

MANAGEMENT: Until further information is available, patients treated with St. John's wort should consider avoiding consumption of protein foods in which aging or breakdown of protein is used to increase flavor. These foods include cheese (particularly strong, aged or processed cheeses), sour cream, wine (particularly red wine), champagne, beer, pickled herring, anchovies, caviar, shrimp paste, liver (particularly chicken liver), dry sausage, figs, raisins, bananas, avocados, chocolate, soy sauce, bean curd, yogurt, papaya products, meat tenderizers, fava beans, protein extracts, and dietary supplements. Caffeine may also precipitate hypertensive crisis so its intake should be minimized as well. Patients should also be advised to avoid or limit consumption of alcohol.

References

  1. Patel S, Robinson R, Burk M (2002) "Hypertensive crisis associated with St. John's Wort." Am J Med, 112, p. 507-8

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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.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.