Aciclovir tablets

Aciclovir anti-viral tablets to treat cold sores. Aciclovir (Zovirax) stops viruses multiplying and spreading.

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How to buy online

  1. Read medical information about cold sore treatment
  2. Answer medical questions to check for eligibility
  3. Reviewed by doctors - posted from NHS pharmacy


Treatment typeQuantityCost
Aciclovir 200mg tablets25 tablets (one treatment)£10.50
Aciclovir 200mg tablets50 tablets (two treatments)£15.00

Prescription issued online - small prescription fee per order.

Prescription fees

Dr Fox supplies medicine on prescription and charges a small prescription fee based on the order value of each prescription.

Prescriptions are issued by our doctors online and sent electronically to our pharmacy.

If you have your own private paper prescription please post to our pharmacy (details).

Dr Fox prices are 25%–50% lower than other UK online clinics.

Order valuePrescription fee
up to £10£1.00
up to £20£3.00
up to £50£5.00
up to £100£8.00
over £100£10.00

Delivery charges

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About Aciclovir tablets


Aciclovir is the medical name for the active ingredient of the tablets. Aciclovir is an anti-viral medicine which stops viruses multiplying and spreading. Dr Fox supplies aciclovir to treat cold sores on the lips. We do not recommend obtaining medicine online for the treatment of genital herpes and genital sores, as a full STI assessment is first required. Obtaining an online test kit and self-treating may leave you vulnerable to undiagnosed infections. For essential information about cold sores and their treatment go to our buy treatment page.

Aciclovir tablets come in various strengths, 200mg, 400mg, and 800mg. We supply a 5 day course of the 200mg strength tablets, which is the recommended course for cold sore treatment. Various brands of tablets are available produced by different drug companies, including Boots and GSK (Zovirax brand) and Actavis. All have the same active ingredients. The shelf life of the tablets is four years, which means that people who are prone to cold sores could keep a stand-by supply at home for use as needed.

How to take

Take one 200mg tablet 5 times a day at 4 hourly intervals for 5 days, swallowed whole, with or without food. Start tablets as soon as possible after the first signs of a cold sore. It is best to start at the stage when there is tingling and burning, even before the sore is visible. Tablets will still have an effect if started later, but results are best with early treatment. Continue for the full 5-day course. If a tablet is missed, take the next as soon as remembered. Do not take extra tablets to make up for missed doses. Avoid dehydration and drink plenty during treatment.

When to consult a doctor

Most people who suffer from repeated cold sores are familiar with their symptoms and can safely self-treat. People who have not previously had sores on the lips or have sores that have not healed after 10 days should consult a doctor. Cold sores are often painful and are sometimes associated with mild symptoms of unwellness. They do not spread out across the face or cause fever and other symptoms of infections.

Aciclovir may not be suitable for people with a history of seizures or kidney disease. Aciclovir can interact with some prescribed medicines such as probenecid used to treat gout and cimetidine for acid indigestion. Other interactions with mycophenolate, ciclosporin, theophylline, and zidovudine are unlikely to be significant at the dose used to treat cold sores. Checks are carried out during the online consultation.

Aciclovir tablets side effects

Not everybody gets side effects. The most common, occurring in less than 1 in 10, are dizziness, headache, irritation, itching skin, tiredness, nausea and sickness, stomach pain, and sensitivity to strong light. See the manufacturer's leaflet for a full list of side effects. If there is a very rare allergic type reaction with swelling of the lips face and eyelids, stop taking tablets and seek immediate medical assistance.

Pregnancy and breast feeding

The risks are unknown, therefore, do NOT take aciclovir whilst pregnant or breast feeding without first consulting a doctor.

Patient information leaflet

The 'Patient Information Leaflet' supplied with medication must be read before taking.

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The order process

Answer short medical questionnaire

Choose treatment, register, and pay

Doctor issues prescription online

Medicine posted direct from pharmacy

Independent reviews

“I'm completely satisfied with the whole process from start to finish. Great prices, superb communication and rapid delivery....highly recommended”08 October 2016 – Davey W., London

“I've used Dr Fox a couple of times now for malaria tablets. On both occasions I received a fast and reliable service. The prices are very good too. No need to pay your GP for a private prescription or pay High Street Chemist prices. Highly recommended.”04 October 2016 – Pete M., Corsham

“My experience is of top customer service with fast deliveries of genuine products sold at the lowest price around. I haven't dealt with better and believe they are unmatched so unrivalled.”02 October 2016 – Jason J., Colchester

“Great service quick uncomplicated good price”20 September 2016 – Mike H., Newcastle upon Tyne

“Answered questionnaire, ordered product. Product is competitively priced and delivered speedily - absolutely no criticism of any kind from me - product works every time.”08 September 2016 – Lionel E., Wigan

“I have used Dr Fox three times now and I find the service easy to use, with good products and delivery usually by return. I also feel confident about using the site and believe that they would only market products that were of reputable origin and safe to use.”22 August 2016 – Robin S., London

“very cautious about buying medicines online but Dr Fox seemed a credible retailer with a good reputation. Thankfully that turned about to be true. Ordering is relatively quick (even quicker to do a repeat order) and simple. The service has been good and I've had no reason to contact them even after many orders.”21 August 2016 – Andy B., Reading

“Impressively fast service to Malta. Also very helpful when I needed to ask a question. Very highly recommended.”17 August 2016 – Anonymous

“As this was the first time i had bought online, i was wary. So i checked the batch number with the manufacturer to make sure my medicine was legitimate and it was. I will definitely use again.”17 April 2016 – Anonymous

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