Use aciclovir to treat and reduce your symptoms of genital herpes.

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Front of box containing 56 Aciclovir 400mg tablets
Rear of box containing 56 Aciclovir 400mg tablets
Blister pack of 14 Aciclovir 400mg tablets
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Prices from £18.00

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In stock. Simply fill in a brief questionnaire. One of our doctors will review your order and prescribe a suitable treatment. How to Order

Repeat outbreak - 1 long course

15 tablet(s) / 400 mg - £18.00

1st outbreak - 1 course

30 tablet(s) / 400 mg - £23.00

Repeat outbreak - 2 long courses

30 tablet(s) / 400 mg - £23.00

Repeat outbreak - 3 long courses

45 tablet(s) / 400 mg - £27.00

3 month course

168 tablet(s) / 400 mg - £40.00

What is aciclovir?

Aciclovir is an antiviral medication used to treat genital herpes. It is used to treat an outbreak of genital herpes, as well as to stop future outbreaks.

Aciclovir is also used to treat:

  • chickenpox and shingles
  • cold sores and other herpes simplex infections
  • or stop herpes outbreaks from happening

Aciclovir is a generic medicine. It is the same as the branded medicine, Zovirax. They both contain the same active ingredient, aciclovir, and work in the same way but have different names. Branded medicines are generally more expensive than generic medicines.

Side effects and contraindications

Aciclovir can be taken by adults up to the age of 65. If you are over 65 years of age, you should speak to your doctor before taking aciclovir.

Common side effects of aciclovir include:

  • feeling or being sick
  • diarrhoea
  • dizziness
  • feeling faint
  • feeling tired (fatigue)
  • headaches
  • high temperature (fever)
  • itching
  • rash
  • skin reaction when exposed to light (photosensitivity)
  • stomach pain

Uncommon side effects of aciclovir include:

  • hair loss
  • itchy, hive like rash

Rare side effects of aciclovir include:

  • increased liver enzymes
  • allergic reaction
  • effects on some blood and urine tests
  • difficulty speaking
  • feeling weak
  • fits (seizures)
  • hallucinations (seeing things)
  • kidney problems
  • liver inflammation
  • low numbers of red blood cells (anaemia)
  • lower back pain
  • stiff neck and sensitivity to light
  • unconsciousness
  • yellowing of the skin and whites of the eyes (jaundice)

If you have any of these rare side effects you should stop taking them and see a doctor straight away.

Aciclovir is known to interact with some medicines, including:

  • probenecid
  • cimetidine
  • mycophenolate mofetil

You should tell your doctor about any prescription or non-prescription drugs you are taking before taking aciclovir, including herbal remedies.

If you want to find out more about aciclovir, please read the patient information leaflet.

Medically reviewed by:
Dr Kathryn Basford

Dr Kathryn Basford is a qualified GP who works as a GP in London, as well as with ZAVA. She graduated from the University of Manchester and completed her GP training through Whipps Cross Hospital in London.

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Article created: 16 Sep 2021

Last reviewed: 16 Sep 2021

(Reviews are for ZAVA UK)

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You can treat genital herpes two ways. One treatment option is for when you experience an individual outbreak (acute therapy) and the other is treatment for when you need to avoid regular outbreaks (suppressive). Asda Online Doctor by ZAVA offers both types of treatment through a discreet, convenient service.

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