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Drug Interactions between Norditropin FlexPro and Tybost

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

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Interactions between your drugs

Moderate

somatropin cobicistat

Applies to: Norditropin FlexPro (somatropin) and Tybost (cobicistat)

GENERALLY AVOID: Coadministration with moderate or weak inducers of CYP450 3A4 may reduce the plasma concentrations of cobicistat, which is primarily metabolized by the isoenzyme. The clinical significance is unknown.

MANAGEMENT: Given the risk of reduced viral susceptibility and resistance development associated with subtherapeutic antiretroviral drug levels, concomitant use of antiretroviral regimens containing cobicistat with these inducers should be avoided. Alternative treatment combinations that do not include metabolic inducers should be considered whenever possible. If concomitant use is required, close clinical and laboratory monitoring of antiretroviral response is recommended.

References

  1. Smith DS, Fujimoto JM "Alterations produced by novobiocin during biliary excretion of morphine, morphine-3-glucuronide and other compounds." J Pharmacol Exp Ther 188 (1974): 504-15
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Canadian Pharmacists Association "e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink" (2006):
  4. EMEA. European Medicines Agency "EPARs. European Union Public Assessment Reports. http://www.ema.europa.eu/ema/index.jsp?curl=pages/includes/medicines/medicines_landingpage.jsp&mid" (2007):
  5. Cerner Multum, Inc. "Australian Product Information." O 0
  6. "Product Information. Tybost (cobicistat)." Gilead Sciences (2014):
  7. "Product Information. Genvoya (cobicistat/elvitegravir/emtricitabine/tenofov)." Gilead Sciences (2015):
View all 7 references

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Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

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.

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