Valaciclovir Tablets

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Fast and effective anti-viral treatment for outbreaks of cold sores

Please note Aciclovir is just as effective at treating Cold Sores and is available at a lower cost.

Looking for Genital Herpes Treatment? Click here to see Valaciclovir for Genital Herpes

Cold Sore Treatment

What is Valaciclovir?

Valaciclovir is an antiviral, prescription only medication used to treat herpes including cold sores. Valaciclovir helps to reduce the severity and the length of the outbreak, helping sores heal quicker and prevents new cold sores from forming.

It’s important to note that Valaciclovir is not a cure for herpes, but supresses the virus to help control the symptoms, and prevent further outbreaks.

How does Valaciclovir work?

Valaciclovir works by interfering with the herpes virus used to reproduce by preventing the multiplication of it and reducing the rate the infection spreads. Valaciclovir is a prodrug, which means it converts to another substance in the body. Valaciclovir converts into Aciclovir when it enters the body.

How do I take Valaciclovir?

  • Four tablets, twice a day with water
  • Take for 1 day

It is important to remain hydrated during the course of your treatment to minimise the risk of dehydration.

How effective is Valaciclovir?

When taken twice daily, Valaciclovir has shown to have similar effects in treating cold sores as Aciclovir. It has also proven to be effective in treating cold sores and other HSV infections of the skin. Valaciclovir starts working almost immediately after you start taking it and is effective in reducing the healing time and reducing the risk transmitted to other people.

What is the difference between Valaciclovir and Aciclovir?

Both Aciclovir and Valaciclovir are closely related. Valaciclovir is a prodrug of Aciclovir, meaning that after it is injested, Valaciclovir turns into Aciclovir. Both medicines are equally effective at treating cold sores but the advantage of taking Valaciclovir is that it doesn’t need to be taken as frequently, which may be easier to comply with the treatment.

What is Valtrex?

The active ingredient in Valtrex is ‘Valaciclovir’ and is the branded version of the medication Valaciclovir. They are medically equivalent, treating cold sores exactly the same way but Valtrex is available at a higher price.

Like most medications, Valaciclovir has some side effects, although they might not affect everyone. The most common ones are:

  • Headaches
  • Nausea
  • Dizziness
  • Skin rashes

 Information Leaflet

Always read the patient information leaflet before commencing treatment.

Important: We advise you to always read the patient information leaflet inside the medication box, as the generic medication may not always entirely match the patient information leaflet listed. Please contact us if you have any questions.

Written and reviewed by our qualified team

GPhC Number: 2088658

Carolina Goncalves

Authored by:

Carolina Goncalves


GPhC Number: 2225869

Rehma Gill

Reviewed by:

Rehma Gill


Find out more about how we ensure the accuracy of our content with our content guidelines.

Content last updated: 23 Feb 2023

Valaciclovir Reviews

9.8/ 10
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Feefo logo

Based on 15 independent customer reviews taken by Feefo (see all Feefo Reviews), Google and Trustpilot (see all Trustpilot Reviews).

(read on Feefo)

Product Review:

"Great meds, does what it says......I've always had trouble with cold sored if my mouth gets injured but these tablets ensure my injury doesn't flare up into a cold sore now!"

Service Review:

"Excellent service and always a speedy delivery!"

"Good service"

Product Review:

"It's helped to stave off an attack of cold sores. "

Service Review:

"The company had a choice of medication to choose from which suited my requirements. The consultation was easy and straightforward to complete. The delivery of the medication was also quick."

(read on Feefo)

Product Review:

"Very pleased 👍,,,, would by again"

Service Review:

"Excellent ,recieved my order the next day 👍"

(read on Feefo)

Product Review:

"Always fast, reliable and quick delivery. Thanks again. Products are always 100% legit."

Service Review:

"Fantastic as always. Very helpful, again and updates are always precise. Don't know what happened to my monthly reminder to order finasteride 1mg. Maby it was my fault. Would be good to get a monthly reminder again. 😊😊 thanks again for being a great company guys. Much appreciated. Will always order from yous. Fast dispatch and fast delivery. Highly recommended."

(read on Feefo)
"East as 1 2 3"

Product Review:

"Work quick and easy to take"

Service Review:

"Easy to order delivery super quick perfect"

"Easy to find and order correct…"

Product Review:

"of course more expensive than NHS prescriptions but worth it "

Service Review:

"Easy to find and order correct medication. Quick delivery!"

"Fast delivery"

Product Review:

"Good Product"

Service Review:

"Fast delivery"

(read on Feefo)
"Got my order very quickly. Also provided with email updates"

Product Review:

"Not sure how effective as the breakout was already in force"

Service Review:

"Fast and efficient"

(read on Feefo)
"Long time happy customer"

Product Review:

"Works great for me without any issues"

Service Review:

"Easy and quick service from start to delivery"

(read on Feefo)

Product Review:

"very pleased with this product"

Service Review:

"first class service .very pleased will use this company always"

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