from
£9.89
⭐Discreet delivery
⭐Well-tolerated with minimal side effects
⭐For the treatment and prevention of genital herpes
You can buy aciclovir online by completing a short medical questionnaire. One of our pharmacists will screen the answers, to make sure that treatment is safe for you to take. All purchases are shipped from our UK pharmacy, with next-day delivery options available.
Name & Dosage | x15 Tablets | x25 Tablets | x30 Tablets | x45 Tablets | x50 Tablets | x75 Tablets | x180 Tablets |
---|---|---|---|---|---|---|---|
Aciclovir 200mg Tablets | £9.89 | £19.49 | £23.89 | ||||
Aciclovir 400mg Tablets | £9.89 | £19.49 | £23.89 | £43.95 | |||
Medication class | Oral antiviral |
---|---|
Mechanism of action | Stops the virus from replicating, reducing symptoms |
Active ingredient | Aciclovir |
Strength | 400mg |
Effective within | 24-48 hours |
Dosage instructions | One tablet three times a day (outbreak treatment) One tablet twice a day (suppression treatment) |
Manufacturer | Actavis, Ranbaxy, Crescent, Wockhardt, Milpharm, Teva |
Use with alcohol | In moderation |
Aciclovir is an antiviral medication, used to treat infections which are caused by the herpes virus. These include:
Genital herpes is an infection caused by the herpes simplex virus. It causes sores to develop around the vagina, or the penis. Sores can also develop around the thighs and anus. Not all sores around the genitals are herpes, and you should get testes for herpes, before using treatment.
Aciclovir can be used to reduce the length and severity of an outbreak.
Aciclovir tablets can also be taken long-term, to reduce the number of outbreaks in those that experience herpes outbreaks on a regular basis.
Aciclovir works by changing the DNA of the herpes simplex virus, so that virus is unable to multiply and infect more cells. This allows the immune system to bring the virus under control, resulting in fewer and milder symptoms that disappear faster than they would without treatment.
Important note: aciclovir is not a cure for infections, but rather can help sores to heal faster and prevent new sores from developing. Treatment can also be effective in reducing pain and itching after sores have healed, reducing the risk of the virus spreading to different parts of the body.
Active ingredients: Aciclovir 400mg
Inactive ingredients: Magnesium stearate, colloidal anhydrous silica, sodium starch glycollate, polyvidone, E172 and E460
Important note: Whilst the active ingredient will always remain the same, different manufacturers may use alternative inactive ingredients. This will not impact the effectiveness of treatment.
There is no direct interaction between aciclovir and alcohol, so you can drink in moderation whilst using treatment. However, if you are experiencing side effects, limit your consumption, as alcohol may intensify side effects of aciclovir, such as headaches, nausea, dizziness, and sleepiness.
Excess alcohol can reduce the function of your immune system. To get the most out of your treatment, alcohol consumption should be limited.
Take one aciclovir 400mg tablet, three times a day for 5 days
Take one aciclovir 400mg tablet, two times a day. You should review your treatment after 6-12 months to see if the number of outbreaks has reduced.
Important note: Spread the dose evenly throughout the course of the day.
Side effects are usually mild and disappear as you adjust to taking the medication.
Side effects of aciclovir tablets include:
Common (affecting up to 10% of users):
Uncommon (affecting up to 1% of users):
For a full list of side effects, refer to the patient information leaflet.
Stop taking aciclovir tablets and seek urgent medical attention if you experience signs of an allergic reaction such as:
Always report any side effects to your doctor or pharmacist.
You should not take aciclovir if you:
You should avoid the following medication when taking aciclovir:
Important note: Always inform your doctor or pharmacist if you are taking medication, so that they can check for interactions.
It is safe to take aciclovir tablets during pregnancy, but this should be done under the supervision of your doctor. It can be advised to take aciclovir four weeks before birth to prevent a genital herpes outbreak. This is to prevent the infection from being spread during birth.
If you have herpes and are pregnant, the risk of passing it onto your baby is very low, however, you should make your doctor aware so that you can discuss your options.
A small amount of aciclovir is present in breastmilk, and you should avoid taking it unless the benefits outweigh the risks.
You may still be eligible to use treatment, however, this is done under the supervision of your doctor.
No, you cannot buy aciclovir tablets over the counter. You will need a prescription to buy aciclovir in the UK.
You can order aciclovir online from a registered pharmacy, such as Chemist Click. A pharmacist will assess your suitability through an online consultation and generate a prescription in-house if it is safe to do so. Your medication will be dispensed and dispatched to you in plain and discrete packaging.
Aciclovir cream is only licensed to treat cold sores (oral herpes), but not genital herpes.
Yes, aciclovir can be taken to treat shingles. The dose of aciclovir used to treat shingles is different to the dose used to treat genital herpes.
It can take 1-2 days for aciclovir tablets to work.
Yes, aciclovir is available on the NHS.
Yes, painkillers such as ibuprofen and paracetamol are safe to take alongside aciclovir tablets.
Yes, aciclovir is available in liquid form, however, it is more expensive than the tablets. Many forms of aciclovir tablets are dispersible.
Yes, but it is important to remember that it is still possible to pass the infection on to others. The chances of transmitting herpes to somebody else increases during an outbreak.
If you experience less than six outbreaks a year, your best option would be to use aciclovir each time you have an outbreak.
If you experience six or more episodes of genital herpes a year, you may wish to think about taking aciclovir as suppression therapy. This can reduce the number of outbreaks.
If you are experiencing less than six outbreaks a year, but you feel as though herpes is negatively affecting your mental health, you should speak to your doctor or pharmacist about using suppression therapy.
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Written by Chemist Click
First created 28th April 2025
Last reviewed 7th October 2025
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By Neil FranklinAciclovir is an antiviral medicine that can treat common viral infections.
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