Valaciclovir Tablets is a prescription medicine used in the treatment of cold sores. It is available to buy online from Click Pharmacy after completing a medical que


5/21/2025 11:08:41 AM


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Valaciclovir 500mg Tablets

Valaciclovir is an antiviral medication used to treat infections caused by the herpes simplex virus (HSV), including cold sores, genital herpes, and shingles.

Medication features:

  • Treatment for herpes if taken at an early stage
  • Will not fight herpes simplex virus when inactive and dormant
  • Prevent a sore from forming if used as a preventative

Next Day Delivery Available

UK Registered Pharmacy

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Expected Delivery: Wednesday

If you order within: 12h36m

Valaciclovir Prices

  • Medicine prices
  • Delivery Information
Medicine Quantity Price
Valaciclovir 500mg 10 Tablets (1 outbreak treatment) £29.99
Valaciclovir 500mg 20 Tablets (1 outbreak treatment) £49.99
Valaciclovir 500mg 30 Tablets (1 outbreak treatment) £64.99
Valaciclovir 500mg 84 Tablets (3 month suppression treatment) £189.99

Delivery charges

Orders approved by our medical team before 3pm Monday – Friday are dispatched the same day via Royal mail. All orders are sent using a tracked and signed for service. Orders are not dispatched on weekends and bank holidays.

Royal Mail 1st Class | £3.95

Delivered within 1-3 working days. Excludes bank holidays. A tracked service with signature required on delivery.

Royal Mail Special Delivery Guaranteed before 1pm | £6.95

Delivered within 1 working day before 1pm. Excludes Sundays and bank holidays. A tracked service with signature required on delivery.

Find out more about our delivery service.

Refunds and returns – Read further information on return and refunds.

  • Overview
  • Directions
  • Cautions
  • FAQ

Buy Valaciclovir Online UK

You can order Valaciclovir online in the UK from our registered pharmacy. Complete the online medical assessment to be reviewed by one of our prescribers. If approved, your medication will be dispensed by our pharmacy team for next day delivery to your address.

About Valaciclovir

While Valaciclovir can’t battle the herpes simplex virus when inactive and dormant, it will possibly well resist the virus when live and attacking the cells of the body. In actual fact, in depth studies performed on Valaciclovir have found it to be an extremely effective treatment for herpes if taken on the early stage of a flare up.

Valaciclovir Summary Information

Type of medicine

Antiviral medication


Treats infections caused by herpes simplex virus (HSV)

How it works

Converted into aciclovir, inhibiting viral replication

Active Ingredient


Directions of use

Oral tablets

Available strengths


Side effects

Common side effects include dizziness, nausea, stomach pains, diarrhoea, tiredness or headaches



The information provided in the summary table is for reference only. It is important to consult a qualified healthcare professional before starting any antiviral treatment, including Valaciclovir.

How effective is Valaciclovir?

Whilst Valaciclovir can't fight the herpes simplex virus when inactive and dormant, it can effectively fight the virus when live and attacking the cells of the body. In fact, extensive studies performed on Valaciclovir have shown it to be a highly beneficial treatment for herpes if taken at the first sign of a flare up. Valaciclovir can even prevent a sore from forming if used as a preventative and can make symptoms more bearable and lessen the period of healing by up to half in some cases.

Why choose Valaciclovir?

Valaciclovir is thought to be even more beneficial than other cold sore treatments as the body can more effectively use this version of the aciclovir drug to help prevent and/or treat the herpes simplex virus. It can also be taken in a lower dose than other treatments and remain effective, which means that there could be fewer side effects than if taking a higher dosage of another medication.

What is contained in Valaciclovir?

The active ingredient is valaciclovir hydrochloride.

The inactive ingredients are ammonium hydroxide, black iron oxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, propylene glycol, shellac glaze and titanium dioxide.

How does Valaciclovir work?

Although the virus causing the cold sore can never be entirely cured, you can treat it with an antiviral medication such as Valaciclovir when active.

Valaciclovir stops the HSV-1 spreading by interfering with the mechanism which enables the herpes virus to multiple during an outbreak. This lessens the speed at which the infection can spread to healthy cells and shortens the lifespan of the blister.


How should I take Valaciclovir?

You will be prescribed the correct dose strength and length of treatment for the type of herpes virus you have. As such, it is important to take the tablets as directed by your doctor to ensure you get the full benefit.

You can take them with or without food and swallowed with water, and you must start taking them as early as possible from the initial onset of your symptoms, which is usually a tingling sensation on the lip or around the mouth. Anytime up to 48 hours from symptoms appearing is the ideal window of time to begin treatment. If you miss a dose and do not remember until close to the time of your next, then wait and take the following tablet at the normal time. Do not take two at once.

How long can I take Valaciclovir for?

The amount of time you use the medication for varies based on how quickly you begin treatment from the first signs of a cold sore as well as the severity of the cold sore itself. Generally speaking, you would take the treatment for anywhere up to 10 days. It can also be used to prevent a herpes outbreak or manage HSV-1 longterm, and studies have shown that it is safe, when prescribed, to be taken for years at a time if necessary, such as in the case of someone with lowered immunity.

What are the side effects of Valaciclovir?

Valaciclovir’s side effects are similar to those found with most medications and depend entirely on your body’s ability to tolerate the drug. The most common side effects include nausea, vomiting, diarrhoea and a headache.

These effects are usually mild and should not stop you taking the treatment, although if you feel concerned at any time, then you can arrange a free and confidential online appointment to speak to a medical expert at Click Pharmacy.

Side effects which have been found to affect less than 1% of patients using Valaciclovir can include:

  • dizziness
  • constipation
  • stomachache
  • painful periods
  • joint pain

To avoid any possible issues with your kidneys whilst taking this medication, ensure you drink plenty of extra fluids to keep them working effectively.

Other warnings to consider

It is extremely rare, but issues with the nervous system can occur through the use of Valaciclovir and can manifest in the form of a change in behaviour, such as becoming more aggressive, confusion and hallucinations. If this occurs, seek medical help right away and stop the treatment. Similar if you find

Certain groups of people are more likely to suffer certain negative side effects, including those with kidney issues such as disease or transplantation, and anyone over 65. Also, if you are, or think you may be pregnant or you are breastfeeding, then ensure you tell your Click Pharmacy doctor or GP so they can discuss potential risks before giving you a prescription. For example, the drug can pass into the milk in a breastfeeding mother, which could potentially affect the baby.

Tell your doctor about any other medications you take, including herbal supplements and vitamins, to ensure that they will not interfere negatively with the Valaciclovir medication causing it to be less effective.

Can pregnant or breastfeeding women use Valaciclovir Tablets?

You should consult with a doctor before using Valaciclovir Tablets if you are pregnant, trying to get pregnant or breastfeeding.

What if I forget to take my dose of Valaciclovir Tablets?

If you forget to take your dose of Valaciclovir Tablets you should take them as soon as you remember, unless it is almost time for your next dose. If it is almost time for your next dose you should skip the dose you just missed and continue as normal. You should never take two doses at once, even if you are making up for a missed dose.

Valaciclovir Reviews

How to order medications from us

Order your medication in a few clicks. Our process is easy, fast and secure.

Step 1

Short Medical Assessment

Fill out a questionnaire so our prescriber can assess if the treatment is suitable for you.

Step 2

Select Preferred Medication

Choose the medication you require from the range offered by our online pharmacy.

Step 3

Next Day

Add delivery details and complete payment process.

Price £29.99

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Available strengths:



Price £29.99

Includes free private prescriptions

In stock

2024/05/21 2024/05/22

Order before 15:00pm (Monday to Friday) for next day delivery