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Drug Interactions between deflazacort and pitolisant

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

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Interactions between your drugs

Moderate

deflazacort pitolisant

Applies to: deflazacort and pitolisant

MONITOR: Concomitant use of pitolisant with NSAIDs and/or corticosteroids may increase the risk of gastrointestinal adverse effects such as dyspepsia, abdominal pain or discomfort, and gastritis due to potential additive irritant effects on the gastrointestinal mucosa. Clinical studies with pitolisant reported gastric disorders caused by hyperacidity in 3.5% of patients. However, the effects were described as mostly mild to moderate in severity. Data are not available on the potential for serious gastrointestinal (GI) toxicity, including inflammation, bleeding, ulceration, and perforation.

MANAGEMENT: Caution is advised if pitolisant is used in combination with NSAIDs and/or corticosteroids, particularly in patients with a prior history of peptic ulcer disease or GI bleeding and in elderly or debilitated patients. If concomitant therapy is required, patients should be advised to report signs and symptoms of adverse GI effects, including abdominal pain or discomfort, dyspepsia, gastroesophageal reflux disease, gastritis, or the appearance of black, tarry stools.

References (1)
  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."

Drug and food interactions

Moderate

deflazacort food

Applies to: deflazacort

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of 21-desdeflazacort, the active metabolite of deflazacort that is formed by esterases after oral administration and further metabolized by CYP450 3A4 to several inactive metabolites. The proposed mechanism is inhibition of CYP450 3A4-mediated metabolism in the gut wall by certain compounds present in grapefruit. 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. Increased systemic exposure to 21-desdeflazacort may increase the risk of corticosteroid adverse effects such as hypercorticism, hyperglycemia, adrenal suppression, immunosuppression, hypertension, salt and water retention, electrolyte abnormalities, behavioral and mood disturbances, posterior subcapsular cataracts, glaucoma, bone loss, and growth retardation in children and adolescents.

MANAGEMENT: Deflazacort should not be administered with grapefruit juice.

References (1)
  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."

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

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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.

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