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Does Emtricitabine Interact with Famciclovir?

Emtricitabine and Famciclovir have a unknown drug interaction according to U.S. FDA drug labeling data. 7 DRUG INTERACTIONS The potential for drug interactions with EMTRIVA has been studied in combination with AZT, indinavir, d4T, famciclovir, and tenofovir DF (TDF). 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
Emtricitabine Class
Human Immunodeficiency Virus Nucleoside Analog Reverse Transcriptase Inhibitor
Famciclovir Class
Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor
Management
Consult your pharmacist
Data Source
U.S. FDA via OpenFDA

What To Tell Your Doctor or Pharmacist

If you are taking Emtricitabine and your doctor is considering prescribing Famciclovir (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
💊 Emtricitabine(Complera)+💊 Famciclovir(Famciclovir)

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
Human Immunodeficiency Virus Nucleoside Analog Reverse Transcriptase Inhibitor
Drug B class
Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor
Source
FDA drug label - emtricitabine

What this means in plain English

7 DRUG INTERACTIONS The potential for drug interactions with EMTRIVA has been studied in combination with AZT, indinavir, d4T, famciclovir, and tenofovir DF (TDF).

About Emtricitabine and Famciclovir

Emtricitabine is a Human Immunodeficiency Virus Nucleoside Analog Reverse Transcriptase Inhibitor, while Famciclovir is a Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor. Emtricitabine is also sold under the brand name Complera. Both medications are taken by mouth. Emtricitabine additionally carries an FDA boxed warning, the FDA's strongest safety alert.

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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.