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Valacyclovir, Acyclovir, and Famciclovir: How Antivirals Compare

Valacyclovir, acyclovir, and famciclovir are antiviral medications used for herpes treatment. They differ mainly in dosing schedule, pharmacy cost, availability, and patient fit; the best choice depends on the indication and clinician review.

Medically reviewed by Bidwell Cranage, APRN, FNP-C · Last updated 2026-05-27

Choose herpes visitDaily suppressive therapy
Prior diagnosis required. Bidwell treats adults ages 18-64 who have already been diagnosed with oral or genital herpes by a healthcare provider. Bidwell does not diagnose new herpes infections online, does not require photo upload, and does not guarantee treatment.

Are these medications in the same family?

Yes. Valacyclovir, acyclovir, and famciclovir are antiviral options used for herpes simplex infections. Valtrex is brand-name valacyclovir. Acyclovir also comes in topical cream for cold sores.

How do the choices compare?

MedicationTypical rolePractical difference
ValacyclovirCold sores, genital outbreaks, suppressionOften simpler dosing than acyclovir.
AcyclovirCold sores, genital outbreaks, suppressionOlder option; often more frequent dosing.
FamciclovirRecurrent herpes treatmentAlternative option depending on history and clinician preference.
Topical acyclovir creamCold soresTopical option; not the main path for genital herpes.

Is generic valacyclovir the same as Valtrex®?

Valtrex is the brand name. Generic valacyclovir contains the same active ingredient. Pharmacy price and availability can differ, and Bidwell does not control medication cost.

Which one is best?

There is no single best antiviral for every patient. The right choice depends on oral versus genital herpes, outbreak versus suppression, timing, kidney history, allergies, medication interactions, pharmacy availability, and clinician judgment.

Can Bidwell prescribe all of them?

Bidwell can consider valacyclovir, acyclovir, famciclovir, and topical acyclovir cream within its herpes treatment scope. Medication is prescribed only when clinically appropriate.

Frequently asked questions

Is valacyclovir stronger than acyclovir?

Not exactly. Valacyclovir is converted into acyclovir in the body and often allows simpler dosing.

Does Bidwell let me choose?

You can state a preference, but the clinician makes the final decision.

Is topical acyclovir for genital herpes?

Bidwell frames topical acyclovir cream as a cold sore option, not the main treatment path for genital herpes.

References

  1. CDC STI Treatment Guidelines: Genital Herpes
  2. DailyMed: Valtrex (valacyclovir hydrochloride)
  3. DailyMed: Acyclovir tablets
  4. DailyMed: Famciclovir tablets
  5. DailyMed: Acyclovir cream

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