aciclovir genital herpes
  • aciclovir genital herpes


Medication features

  • 400mg Tablets
  • Antiviral treatment for genital herpes
  • Outbreak or Suppression dosages
  • Drink plenty of water when on a course


Aciclovir Tablets Online UK

You can order Aciclovir from our UK registered online pharmacy and doctor service. If you have been diagnosed with genital herpes, you can be prescribed this medication to treat the infection.

No prescription is required, however, you will need to complete an online assessment, so our doctors can issue a prescription to our pharmacy. If the doctors approve your order, a prescription is passed to our pharmacy, who will then dispense and dispatch your medication.

If our doctors feel a face to face consultation would be best for you, a notification is sent via e-mail and a full refund is issued.

What is Aciclovir?

Aciclovir is an antiviral medication used to treat infection caused by the herpes virus, including cold sores, genital herpes, chicken pox and shingles. It is available on prescription as an oral medication, or as a topical cream which can be bought over the counter, prescription-free. The topical cream is for use on cold sores and should not be used to treat any other form of the infection unless prescribed. 

Aciclovir dosage

To treat genital herpes in adults, Aciclovir should be taken three times daily. It is important to drink plenty of water when taking a course of these antivirals to minimise potential side effects. 

If Aciclovir is being used to suppress an outbreak, the dosage is one tablet twice daily. Suppression treatment is used in people who have frequently recurring outbreaks of herpes. This is generally defined as more than 6 outbreaks per year.

The prophylactic treatment can help reduce, or completely stop recurring outbreaks. In addition, future outbreaks generally don't last as long and are less aggressive. 

Comparing treatments

All of the main treatments for genital herpes are anti-virals which work in the same way. The main point of difference is that while Aciclovir needs to be taken three times daily, Valaciclovir and Famciclovir only require twice daily dosage. This makes compliance with the herpes eradication regimen a little easier since you don't need to remember to take a midday dose.

Aciclovir is, however, the most cost-effective option, as both of the other antivirals are more expensive. 

Aciclovir summary



Type of drug

Antiviral medicine


From £14.95

Side effects

Can include stomach pain, nausea, headache, tiredness

Aciclovir Prices

400mg x15 tablets


400mg x 30 tablets


400mg x 45 tablets


400mg x 168 tablets



  • What is genital herpes?

    Genital herpes is a sexually transmitted infection caused by the herpes simplex virus.

  • What are the symptoms of genital herpes?

    The main symptoms of genital herpes are painful blisters and sores which occur around your genitals, buttocks and thighs. 

  • How can I treat genital herpes?

    Antivirals are required to treat genital herpes. These include Aciclovir, Famciclovir and Valaciclovir.

  • Can you cure genital herpes?

    Once the virus is contracted, it will remain in your body for life. You will not always, or may never display symptoms however. 

  • Can you get genital herpes from a cold sore?

    Unfortunately yes. If someone who has a cold sore performs oral sex on you, it's possible you will contract the herpes virus which can lead to genital herpes.

  • How do I test for genital herpes?

    You should contact your local sexual health clinic or GP to get a test for genital herpes.

    You can also find home test kits online.

  • What happens if I have genital herpes while pregnant?

    You should seek help from your GP. You should not take any antiviral medication without consultation, as these may cause complications for both you and your baby.

  • Are there alternative treatments for genital herpes?

    You can use a local anaesthetic gel to help deal with painful outbreaks of genital herpes.

    This would usually be used in conjunction with an antiviral medication. 


Treatment Comparison

Outbreak DosageOne tablet THREE times daily for five daysOne tablet TWICE daily for 5 daysOne tablet TWICE daily for 5 days
Suppression DosageOne tablet TWICE daily for 3 months One tablet TWICE daily for 3 monthsOne tablet TWICE daily for 3 months
MechanismPrevents the virus from multiplyingPrevents the virus from multiplyingPrevents the virus from multiplying
PriceCheapest. From £14.95.More expensive. From £19.95.More expensive. From £19.95.

Side Effects

Aciclovir Side Effects

Common side effects of Aciclovir tablets are:

  • Stomach pain
  • Diarrhoea
  • Tiredness
  • Headache
  • Nausea
  • Sensitivity to light
  • Rash
  • Vomiting
  • Itching
  • Hives

Rare side effects of Aciclovir tablets are:

  • Anaemia (iron deficiency)
  • Confusion
  • Dizziness
  • Kidney problems
  • Breathing difficulties
  • Neurological problems
  • Convulsions
  • Drowsiness
  • Hallucinations
  • Jaundice
  • Changes in the blood

If you experience any severe side effects or symptoms of an allergic reaction (breathing difficulties, itching, hives, rash) you should seek immediate medical attention. If you experience any prolonged side effects you should speak to the prescribing doctor.


Info Leaflet

Before taking any medication, it is important to read the patient information leaflet

Order on Monday to Friday until 3:30pm guarantees next day delivery options


Prices From £14.95
As low as £0.21 / Tablet

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Medication Simple Online Pharmacy
400mg x 15 - 1 Outbreak £14.95
400mg x 30 - 2 Outbreaks £19.95
400mg x 45 - 3 Outbreaks £23.95
400mg x 168 - Suppression Course £34.95


Medication Simple Online Pharmacy
1 Outbreak - 10 Tablets £14.95
2 Outbreaks - 20 Tablets £19.95
3 Outbreaks - 30 Tablets £23.95
Supression Course - 84 Tablets £34.95


Medication Simple Online Pharmacy
500mg x 10 - 1 Outbreak £22.95
500mg x 20 - 2 Outbreaks £43.99
500mg x 30 - 3 Outbreaks £59.99
500mg x 84 - Supression Course £139.99