• Converts to aciclovir in the body for powerful virus-blocking action
  • Speeds up healing and reduces pain, swelling, and redness
  • Generic alternative to Valtrex - same results at a lower cost

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Overview

Looking for an effective antiviral without the branded price tag? Valaciclovir Tablets offer the same powerful cold sore treatment as Valtrex, helping to speed up healing, ease discomfort, and reduce the risk of recurring outbreaks.

By stopping the herpes virus from multiplying, Valaciclovir works best when taken at the very first signs of a cold sore — often shortening recovery by 1–2 days and keeping flare-ups under control.

This medicine requires a secure online consultation with a UK-registered prescriber, and will only be supplied if clinically appropriate.


What is Valaciclovir


Valaciclovir is an effective antiviral used to treat cold sores caused by the herpes simplex virus (HSV-1). Once inside the body, it’s converted into aciclovir — the active ingredient that stops the virus from multiplying. This helps reduce symptom severity, speed up healing, and lower the risk of future outbreaks.

Valaciclovir is commonly chosen for:

  • Treating cold sores quickly and effectively when taken at the first sign (tingling or redness)
  • Relieving pain, swelling, and discomfort during an outbreak
  • Preventing frequent or severe recurrences in those prone to flare-ups


It offers the same clinically proven results as branded Valtrex, but at a more affordable price.

Directions

  • Take exactly as prescribed by your clinician.
  • The typical dose for cold sores is 2g twice in one day, taken 12 hours apart.
  • Swallow tablets whole with water, with or without food.
  • Begin treatment as soon as you notice the first signs (tingling, burning).
  • Do not exceed the prescribed dose.

Side Effects

Most people tolerate Valaciclovir well, but as with all medications, side effects can occasionally occur. These are typically mild and temporary.

Common (may affect up to 1 in 10 people):

  • Headache – usually short-lived and manageable.
  • Nausea or stomach upset – taking tablets with food may help reduce discomfort.
  • Dizziness – avoid driving or operating machinery if you feel light-headed.
  • Fatigue – feeling more tired than usual may occur, especially early in treatment.

 

Rare but serious (seek medical advice immediately):

  • Allergic reaction – signs include rash, swelling of the face or throat, or difficulty breathing.
  • Kidney problems – particularly in older adults or if you're dehydrated.
  • Confusion or hallucinations – more likely in elderly patients or those with kidney issues.


Disclaimer: This is not a complete list of side effects. Always read the patient information leaflet that comes with your medicine for full details. If you notice anything unusual or concerning, stop using the medicine and seek medical advice promptly. In an emergency, call 999 or go to A&E.

Warnings

Do not take Valaciclovir if you:

  • Are allergic to valaciclovir, aciclovir, or any tablet ingredients
  • Have significant kidney or liver problems without medical supervision


Other cautions:

  • Drink plenty of fluids during treatment
  • Tell your prescriber about other medicines you are taking
  • Use only under medical advice if pregnant or breastfeeding

FAQ's

Is generic Valaciclovir as effective as Valtrex?
Yes — it contains the exact same active ingredient, strength, and effect.

How quickly does it work?
It works best when taken at the very first sign of a cold sore, often reducing healing time by 1–2 days.

Do I need to take it daily?
No — for cold sores, it’s usually a one-day course. Daily suppressive treatment may be used for frequent outbreaks.

Can I switch from Valtrex to generic Valaciclovir?
Yes, they are medically equivalent.

Does it prevent future cold sores?
It won’t cure the virus, but it can reduce the frequency and severity of outbreaks.

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