Valaciclovir is a tablet treatment indicated for cases of genital herpes. It is a generic version of the branded medicine Valtrex, and performs the same function.

To renew your prescription and buy Valaciclovir online, take our questionnaire. Your case will be assessed by our practising doctor, and following approval, fulfilled at our UK pharmacy.

Trustpilot rating 9.5 out of 10
Order now, and get it by Monday 23rd April

Take as advised by your prescribing doctor. Valaciclovir is only available in 500mg.

£ 35
Order now, and get it by Monday 23rd April

Valaciclovir is a tablet treatment indicated for cases of genital herpes. It is a generic version of the branded medicine Valtrex, and performs the same function.

To renew your prescription and buy Valaciclovir online, take our questionnaire. Your case will be assessed by our practising doctor, and following approval, fulfilled at our UK pharmacy.

Order now - our doctors are standing by
  • Secure doctor consultation Your case is confidentially reviewed by a qualified practitioner
  • Dispensed by a UK pharmacy Our regulated pharmacy works to the highest possible standards
  • Next-day shipping All of our orders are delivered by 24-hour tracked courier
Product information

Valaciclovir is a tablet medicine used to treat genital herpes. It does this by fighting the virus responsible for causing symptoms, herpes simplex (HSV), and sending the virus back into a state of recess. When applied at the first sign of a recurrence, the treatment can help to limit the severity of an outbreak.

  1. Tablet antiviral

  2. Prevents symptoms before they can develop

  3. Helps to send virus into remission

Herpes is caused by one of two strains of HSV (1 or 2), and can lead to the presence of oral or genital sores, or blisters. These tend to be more uncomfortable than painful, and can cause someone to feel self-conscious when they appear. The condition is at present not curable, and once contracted, remains present in a person’s system indefinitely. However, the severity and frequency of flare-ups will often decrease as a person gets older.

Genital herpes is spread through skin-to-skin contact, meaning that it is more likely to be transmitted through sexual intercourse. Using barrier contraceptives such as condoms does not necessarily reduce the spread of herpes, as it is still possible for a partner to come into contact with sores even one is worn. The avoidance of sex during active periods is the best way to ensure the virus is not passed on to someone else.

The virus is at its most transferable when it is active, particularly when the surfaces of blisters and sores have broken. It becomes much less contagious a few days after the sores have fully healed.

Because the condition can lay dormant for long periods, it can be tricky to predict when it might resurface. The condition is more likely to reactivate when the immune system is in a weakened state; for instance, when someone is tired or run-down. As there is no cure for herpes, treatment works to limit symptoms, speeding up recovery and putting the virus into a state of inactivity.

Valaciclovir is an established medicine, and has been available for some time in its branded form as Valtrex, made by GlaxoSmithKline. The US patent on this medicine expired in 2009, and it has since been available in generic forms.

The treatment is a prodrug, which means that it is converted into an active ingredient by a person’s metabolism after it has been taken. Valaciclovir in the body changes into aciclovir, which is a widely-used antiviral ingredient in herpes medicine. It functions by attacking the virus’s capacity to sustain itself through growth and multiplication. After the virus is rendered inert, antibodies send it back into hibernation.

Initial treatment for genital herpes should be issued after symptoms have been assessed by a doctor or practitioner. So if you think you may be developing the condition for the first time, or have not taken treatment before, see your doctor or arrange an appointment at your local GUM or sexual health clinic.

You can get your prescription renewed and buy Valaciclovir online with our private consultation service. Take our questionnaire, and a doctor will review your answers. When they have confirmed the treatment as suitable, they will generate a prescription and send this to our pharmacy to be dispensed. Orders are shipped by next-day delivery in discreet packaging to help ensure your privacy.

Active Ingredient

Valaciclovir is the operating ingredient in this treatment. It was developed as the branded medication Valtrex by GlaxoSmithKline in the late 1980s, and became available as a generic medicine in 2009.

The agent is a prodrug, which activates after coming into contact with the human metabolic system. Inside the body, the substance is converted into aciclovir. This treats herpes infections by blocking the function of an enzyme, called DNA polymerase, which the virus requires to reproduce. Once this process has taken place, the virus is no longer able to grow, and susceptible to attack from the immune system. Antibodies then force the virus into remission.

Buy now
Page last reviewed:  16/04/2018


When using Valaciclovir, it is vital to follow the directions set out by our doctor and to adhere to the guidelines specified in the instructions. This will help to enable the medicine to work at its very best, and reduce the likelihood of side effects.

  1. Take as directed. For genital herpes, this will typically be one tablet twice a day for five consecutive days for recurrences; or ten consecutive days for initial outbreaks.
  2. Swallow one tablet with water.
  3. The tablets are effective regardless of whether you take them with or without food.
  4. Never take more than the amount prescribed.
  5. If you miss a dose, don’t take an extra dose to compensate. Carry on as normal.

Ensure you read the leaflet provided before using this medicine. If you are still less than completely sure how to use it, ask your physician or your pharmacist for advice.

Page last reviewed:  16/04/2018
Please read the patient information leaflet for this medicine fully before use:

Valaciclovir 500mg

Side effects & Warnings

Side effects

This product, like any other medicine, may cause side effects in some users. It is important to know what these are, so that you can take the appropriate action and seek medical help if they become apparent.

Common (1 in 10 people or less):

Headache, nausea.

Uncommon (1 in 100 people or less):

Rash, sensitivity to light, breathlessness.

Rare (1 in 1000 people or less):

Confusion, dizziness, hallucinations, diarrhoea, kidney dysfunction, abdominal pain, vomiting.

Very rare (1 in 10000 people or less):

Angioedema, kidney failure, tremors, ataxia, convulsions.

The side effects listed here are only a selection. For a full list, refer to the leaflet supplied or ask your prescriber. Seek medical attention immediately if you notice anything unusual or suspect you may be experiencing harmful side effects or an allergic reaction to the treatment.


Taking it with other medicines

Your prescribing doctor needs to know if you are using other medications, whether they are prescription, non-prescription or remedies.

Medicines which may affect the efficacy of this treatment include probenecid, cimetidine, tacrolimus, ciclosporin, and mycophenolate mofetil. You should only use Valaciclovir in addition to other treatments for herpes if your doctor tells you to.

Conditions to look out for

A history of liver or kidney diseases may inhibit your suitability for this medication.

Pregnancy and breastfeeding

This product is not usually recommended for use in pregnancy. If you are pregnant or breastfeeding, you should speak to your doctor prior to taking this medication. 

Driving and machinery

Valaciclovir can cause side effects such as dizziness. You should make sure that you feel fine before driving or operating machines.

Page last reviewed:  16/04/2018
Please read the patient information leaflet for this medicine fully before use:

Valaciclovir 500mg


Can I still drink alcohol?

Yes, alcohol should not affect your capacity to use Valaciclovir.

Will I still be able to drive?

Some of the side effects associated with this medicine may impair your judgment, and your ability to drive safely. If this occurs, do not drive and speak to a doctor.

Can I take the medicine while pregnant?

The treatment is not always recommended for use during pregnancy or in those who are breastfeeding, as it could cause harm to mother or child. Only use it if your doctor thinks you need it.

How should I store it?

Never above 30 degrees, and always in an environment protected from moisture and excessive sunlight.

Am I allergic to anything in the medicine?

This medicine contains valaciclovir, calcium hydrogen phosphate, sodium starch glycolate, hydroxypropylcellulose, talcum, magnesium stearate, hypromellose, lactose, titanium dioxide (E171) and macrogol 4000. Do not use the medicine if you have an allergy to any of the above.

Is it available over-the-counter?

No. You can only buy it with a prescription. 

Is it right for me?

If you haven’t taken treatment for herpes before or are having your first episode, ideally you should see a doctor in person, so that they can initiate an appropriate course of medicine.

To get your prescription for Valaciclovir renewed online with our UK pharmacy, take our questionnaire to start your consultation. Your request will be checked by a doctor, who will issue a prescription following approval. This will then be dispensed at our pharmacy, before being shipped to your chosen address by tracked next-day parcel.

Page last reviewed:  16/04/2018
Our service

Consultation. Prescription. Delivery. Satisfaction.

  • GMC Doctors
  • Genuine Medication
  • 24hr Delivery
  • Secure Payment & Data
  • Registered Pharmacy
  • Easy Repeat Orders

We promise to keep your details secure and private. We will never sell your information or share it with third parties. Whatever treatment you buy online from us, we will send in plain, unmarked packaging via our secure courier service.

Delivery on all items is included in the price. After your order has been dispatched, you’ll be supplied with a tracking number, allowing you to follow the progress of your items every step of the way. We deliver to anywhere in the UK, so whether you’re in London, Birmingham, Manchester, Glasgow or Cardiff, your order will be at your door within just 24 hours of approval from our doctor.

A simple process
Getting the treatment you need has never been easier with our speedy and simple online service.
  • Search for your medicine

    Find the treatment you need.
  • Fill in a simple questionnaire

    A GMC-registered doctor will review your answers.
  • 24h delivery to your door

    Next-day delivery. Every order is sent by tracked courier.
  • Repeat ordering is easy

    We keep your details secure so you can reorder with ease.

No matches found. You can find all our treatments here