Does Voxilaprevir Interact with Fostemsavir Tromethamine?
CDI records a moderate classification for Voxilaprevir and Fostemsavir Tromethamine. The stored summary is: Temsavir may increase plasma concentrations of voxilaprevir to a clinically relevant extent. Use alternative HCV regimen if possible. The mechanism involves oatp1b1/3 inhibition. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.
Evidence status
A current label comparison is not yet available for this record. The summary and severity are stored CDI information; they have not been independently validated on this page against the exact product label.
Confirm the medicine, formulation, route, and applicable warning with your pharmacist or prescriber. Independent clinical review has not been recorded.
- Stored CDI classification
- Moderate
- Management
- Confirm exact products with your pharmacist
- Data Source
- U.S. FDA via OpenFDA
Recorded Mechanism
OATP1B1/3 inhibition
What To Tell Your Doctor or Pharmacist
If you are taking Voxilaprevir and your doctor is considering prescribing Fostemsavir Tromethamine (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider