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Aciclovir

An antiviral medicine for infections such as cold sores, shingles, chickenpox and genital herpes.

Clinical information

Common uses

  • cold sores and genital herpes
  • shingles and chickenpox
  • herpes simplex eye infections
  • preventing these infections in weakened immune systems

Common side effects

  • headache
  • feeling dizzy
  • feeling or being sick
  • diarrhoea
  • stomach ache

Cautions

  • drink plenty of water with tablets, especially with kidney problems
  • not if allergic to aciclovir or valaciclovir
  • get advice before using cold sore cream if immunosuppressed

Interactions

  • probenecid (gout medicine)
  • cimetidine (stomach ulcer medicine)
  • mycophenolate mofetil (transplant medicine)

Pregnancy: usually fine — check with a pharmacist or doctor first

Reference information, not medical advice — always follow your doctor or pharmacist. Source: NHS Medicines A–Z, nhs.uk/medicines/aciclovir (accessed 2026-08-16)

Approved brands & formulations30

Brand nameDosage formStrengthImporterCategory
Aciclovir/ AcyclovirOral Liquid400 mg/5mlPOM
Aciclovir/ AcyclovirOral Liquid200 mg/5mLPOM
Aciclovir/ AcyclovirTopical Preparations ( Ointment )5% w/wPOM
Aciclovir/ AcyclovirTopical Preparations ( Cream )3% 5gPOM
Aciclovir/ AcyclovirOphthalmic preparations ( Ointment )3% w/w ( 4.5 g)POM
Aciclovir/ AcyclovirTopical Preparations ( Cream )0.05POM
Aciclovir/ AcyclovirTopical Preparations ( Cream )5% w/wPOM
Aciclovir/ AcyclovirTablet ( Dispersible )800 mgPOM
AcyclovirParenteral ( Injection )25 mg /5 mlPOM
AvoraxTablet400mgADK Pharmaceutical Company Pvt LtdPOM
Axcel Acyclovir CreamTopical Preparations ( Cream )5% w/w ( 5g )State Trading Organization PlcPOM
Cicloviral 200Tablet200mgLife Support Pvt.LtdPOM
Cicloviral 400Tablet400mgauthorized medicine importersPOM
Declovir CreamTopical Preparations ( Cream )0.05authorized medicine importersPOM
HerperaxTopical Preparations ( Ointment )5% w/w ( USP ) 5gADK Pharmaceutical Company Pvt. LtdPOM
Herperax 200Tablet ( Uncoated Tablet )200mg ( BP )ADK Pharmaceutical Company Pvt. LtdPOM
Herperax 800Tablet ( Uncoated Tablet )800mg (BP)ADK Pharmaceutical Company Pvt. LtdPOM
Herpex-5%Topical Preparations ( Cream )5% w/wauthorized medicine importersPOM
LovirOphthalmic preparations ( Ointment )30mg/g (3.0%) (4.5g)ADK Pharmaceutical Company Pvt. LtdPOM
OcuvirTopical Preparations ( Cream )3% 5gauthorized medicine importersPOM
Ocuvir Dt 800Tablet ( Dispersible )800 mgauthorized medicine importersPOM
VAXCEL ACYCLOVIR I.V. FOR INFUSIONParenteral ( Infusion- Powder )250mgState Trading Organization PlcPOM
Virest (Hovid)Tablet200 mgHeart Land PharmacyPOM
Virest (Hovid)Topical Preparations ( Cream )5% w/w ( 5g )Heart Land PharmacyPOM
Virest (Hovid)Tablet400 mgHeart Land PharmacyPOM
ZoviraxTopical Preparations ( Cream )5% w/wauthorized medicine importersPOM
ZoviraxOphthalmic preparations ( Ointment )3% w/w ( 4.5 g)authorized medicine importersPOM
ZoviraxTablet800 mgADK Pharmaceutical Company Pvt. Ltd. and State Trading Organization PlcPOM
ZoviraxTablet200 mgADK Pharmaceutical Company Pvt. Ltd. and State Trading Organization PlcPOM
Zovirax 250mgParenteral ( Infusion- Powder )250mg/vial ( 10ml )State Trading Organization Plc. And ADK Pharmaceutical Company Pvt. LtdPOM
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