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Does Sofosbuvir Interact with Alafenamide?

Sofosbuvir and Alafenamide have a unknown drug interaction according to U.S. FDA drug labeling data. John's wort (Hypericum perforatum) 7.4 Drugs without Clinically Significant Interactions with VEMLIDY Based on drug interaction studies conducted with VEMLIDY, no clinically significant drug interactions have been observed with: ethinyl estradiol, ledipasvir/sofosbuvir, midazolam, norgestimate, sertraline, sofosbuvir, sofosbuvir/velpatasvir, and sofosbuvir/velpatasvir/voxilaprevir. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Unknown
Sofosbuvir Class
Hepatitis C Virus Nucleotide Analog NS5B Polymerase Inhibitor
Management
Consult your pharmacist
Data Source
U.S. FDA via OpenFDA

What To Tell Your Doctor or Pharmacist

If you are taking Sofosbuvir and your doctor is considering prescribing Alafenamide (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
  • Never stop or change either medication without first consulting your healthcare provider
💊 Sofosbuvir(Sovaldi)+💊 Alafenamide(Genvoya)

Severity & Interaction Details

ℹ️
unknown
Interaction documented — severity unclassified
The FDA label notes an interaction but the severity is not classified in our dataset.
Severity scale
MinorContra
On record
Yes
Drug A class
Hepatitis C Virus Nucleotide Analog NS5B Polymerase Inhibitor
Drug B class
—
Source
FDA drug label - tenofovir alafenamide

What this means in plain English

John's wort (Hypericum perforatum) 7.4 Drugs without Clinically Significant Interactions with VEMLIDY Based on drug interaction studies conducted with VEMLIDY, no clinically significant drug interactions have been observed with: ethinyl estradiol, ledipasvir/sofosbuvir, midazolam, norgestimate, sertraline, sofosbuvir, sofosbuvir/velpatasvir, and sofosbuvir/velpatasvir/voxilaprevir.

About Sofosbuvir and Alafenamide

Sofosbuvir is a Hepatitis C Virus Nucleotide Analog NS5B Polymerase Inhibitor. You may recognize them by the brand names Sovaldi and Genvoya. Both medications are taken by mouth. Both Sofosbuvir and Alafenamide carry an FDA boxed warning — the agency's most serious safety designation.

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Data integrity: Every interaction shown is extracted directly from official U.S. FDA drug labeling via openFDA and the U.S. National Library of Medicine (NIH) — no interactions are invented, inferred, or manually edited. Maintained by CheckDrugInteractions.com. See our methodology or report a correction at support@checkdruginteractions.com.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine, supplemented with a small number of well-established interactions from curated clinical references. For informational purposes only. Always consult your pharmacist or physician.