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Drug Interactions between mifepristone and somatropin

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

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Interactions between your drugs

Moderate

somatropin miFEPRIStone

Applies to: somatropin and mifepristone

GENERALLY AVOID: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of mifepristone, which is primarily metabolized by the isoenzyme. However, the interaction has not been studied, and the clinical impact is unknown.

MANAGEMENT: When mifepristone is prescribed daily to control hyperglycemia secondary to hypercortisolism in patients with endogenous Cushing's syndrome, concomitant use with potent CYP450 3A4 inducers such as carbamazepine, phenobarbital, phenytoin, and rifamycins should generally be avoided. Other, less potent inducers such as aminoglutethimide, barbiturates, bexarotene, bosentan, dabrafenib, efavirenz, nafcillin, nevirapine, somatrem, somatropin, and various other anticonvulsants may also interact. Caution is advised if they are used with mifepristone.

References

  1. "Product Information. Mifeprex (mifepristone)." Danco Laboratories PROD (2001):
  2. "Product Information. Korlym (mifepristone)." Corcept Therapeutics Incorporated (2012):

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Drug and food interactions

Moderate

miFEPRIStone food

Applies to: mifepristone

ADJUST DOSING INTERVAL: Food may significantly increase the plasma concentrations of mifepristone.

GENERALLY AVOID: Grapefruit juice may increase the plasma concentrations of mifepristone. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Because pharmacokinetic interactions involving grapefruit juice are often subject to a high degree of interpatient variability, the extent to which a given patient may be affected is difficult to predict.

MANAGEMENT: When mifepristone is used daily to control hyperglycemia secondary to hypercortisolism in patients with endogenous Cushing's syndrome, it should be taken with food to achieve consistent plasma drug levels. Patients should be advised to avoid consuming grapefruit or grapefruit juice during treatment with mifepristone, as it may cause increased adverse effects such as headache, dizziness, fatigue, nausea, vomiting, cramping, diarrhea, hypokalemia, adrenal insufficiency, vaginal bleeding, arthralgia, peripheral edema, and hypertension. Because mifepristone is eliminated slowly from the body, the interaction with grapefruit juice may be observed for a prolonged period.

References

  1. "Product Information. Mifeprex (mifepristone)." Danco Laboratories PROD (2001):
  2. "Product Information. Korlym (mifepristone)." Corcept Therapeutics Incorporated (2012):

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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.

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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