Skip to content

AntiviralsAntivirals

This range brings together antiviral medicines for herpesvirus infections, influenza, HIV and viral hepatitis, spanning single ingredients and combination tablets such as Valtrex, Tamiflu, Biktarvy and Harvoni.

Valtrex

Valaciclovir

500mg · 1000mg

Valaciclovir tablets for shingles and herpes simplex infections. It stops the virus from multiplying by blocking its DNA.

From$3.12/ tabletView

Zovirax

Aciclovir

200mg · 400mg · 800mg

Aciclovir tablets for shingles and genital herpes. It stops the virus from reproducing, which helps the sores heal.

From$0.51/ tabletView

Aciclovir Tablets

Aciclovir

200mg · 400mg · 800mg

Aciclovir tablets for herpes zoster and herpes simplex. It works best when started at the first sign of an outbreak.

From$0.71/ tabletView

Tamiflu

Oseltamivir

75mg

Oseltamivir capsules for influenza A and B. It stops the flu virus from spreading to new cells.

From$8.67/ capsuleView

Famvir

Famciclovir

250mg · 500mg

Famciclovir tablets for shingles and cold sores. It becomes active inside infected cells to stop the virus multiplying.

From$4.42/ tabletView

Movfor

Molnupiravir

200mg

Molnupiravir capsules for covid-19. It forces the virus to make copying errors so it cannot multiply.

From$4.39/ capsuleView

Baraclude

Entecavir

0.5mg · 1mg

Entecavir tablets for chronic hepatitis B. It mimics a building block the virus needs, stopping it from copying itself.

From$5.74/ tabletView

Amantadine Capsules

Amantadine

50mg · 100mg

Amantadine capsules for parkinson's disease and influenza A. It increases dopamine levels in the brain, helping with the stiffness and slowness of Parkinson's.

From$0.30/ tabletView

Tenvir

Tenofovir Disoproxil

300mg

Tenofovir disoproxil tablets for HIV and chronic hepatitis B. It blocks a key step the virus needs to replicate.

From$4.11/ tabletView

Sustiva

Efavirenz

200mg · 600mg

Efavirenz tablets for HIV-1 infection. They stop the virus from replicating by blocking its reverse transcriptase enzyme.

From$5.31/ tabletView

Kaletra

Lopinavir, Ritonavir

200mg + 50mg

A lopinavir and ritonavir tablet for HIV-1 infection. Ritonavir prolongs the effect of lopinavir, so the two are paired.

From$3.45/ tabletView

Copegus

Ribavirin

200mg

Ribavirin capsules for chronic hepatitis C. It interferes with viral RNA and the cell's messenger RNA, stopping the virus from replicating.

From$7.24/ capsuleView

Zerit

Stavudine

30mg · 40mg

Stavudine capsules for HIV-1 infection. It blocks the virus from copying its genetic code.

From$0.20/ capsuleView

Harvoni

Ledipasvir, Sofosbuvir

90mg + 400mg

Ledipasvir and sofosbuvir tablets for chronic hepatitis C. The combination stops the virus from copying itself.

From$59.32/ tabletView

Velpanat

Sofosbuvir, Velpatasvir

400mg + 100mg

Sofosbuvir and velpatasvir tablets for chronic hepatitis C. The two antivirals together stop the virus from multiplying.

From$42.39/ tabletView

Key points

  • Virus type decides which antiviral applies here, since a medicine for one virus will not treat an infection caused by another.
  • Influenza antivirals work differently from antibiotics and from antivirals used against other viruses, a distinction drawn by the CDC.
  • HIV treatment usually combines medicines from more than one antiretroviral class rather than a single ingredient alone.
  • Hepatitis B and C are different viruses treated with different antivirals in this range, never one interchangeable hepatitis medicine.

Herpesvirus and influenza antivirals

Valtrex (valaciclovir), Zovirax and Aciclovir Tablets (both aciclovir), and Famvir (famciclovir) are herpesvirus antivirals, used for Herpes Zoster, genital herpes and chickenpox caused by related strains of the virus. Tamiflu (oseltamivir) is a separate influenza antiviral, used against influenza A and influenza B rather than herpesviruses, since a flu antiviral does not treat a herpes infection or the reverse.

HIV and viral hepatitis antivirals

Tenvir-em and Trustiva pair Tenofovir Disoproxil with Emtricitabine for HIV-1, and Sustiva and Trustiva both contain Efavirenz. Biktarvy, Kaletra and Zerit use other antiretroviral generics for the same infection. Baraclude and Tenvir treat chronic hepatitis B, while Copegus, Harvoni and Velpanat treat chronic hepatitis C. Movfor (molnupiravir) is the range’s only COVID-19 antiviral, separate from both hepatitis groups.

Further reading