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Valaciclovir is an antiviral medication. It is primarily used to treat herpes infections of the skin and mucous membranes, especially both oral and genital herpes, contracted from practicing unsafe sex. It works by preventing viral infections from multiplying, reducing the severity of the infection and stopping it from spreading.
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What is Valaciclovir?

Valaciclovir, also spelled Valacyclovir, is one of many genital herpes treatments. It is an antiviral tablet that works to stop the growth of viruses, preventing the worsening of genital herpes symptoms.  In addition to its use for treating herpes, Valaciclovir can be used to treat other viral infections including: varicella zoster (VZV) and cytomegalovirus (CMV).

How does Valaciclovir work?

Valaciclovir is a prodrug. This means that Valaciclovir provides treatment for genital herpes by being converted to the active ingredient aciclovir once in the body. If Valaciclovir is started early on during an outbreak, it tends to reduce the severity and duration of symptoms.

How do you take Valaciclovir?

Valaciclovir is different from other antiviral medications like Aciclovir in that it is only taken twice a day, rather than 3 to 5 times a day like its counterparts. If it is your first herpes infection, you should take this medication from anywhere between 5 to 10 days, depending on what your doctor or pharmacist prescribes.

How effective is Valaciclovir in treating herpes?

Valaciclovir is an affordable and effective way of treating herpes outbreaks. It is also an effective way of preventing future outbreaks. However, it is important to note that herpes is a chronic condition; there is no cure for the herpes simplex virus.

What are the common side effects of Valaciclovir?

The most common side effects of Valaciclovir include:

  • dizziness and headache
  • nausea and vomiting
  • diarrhea and stomach pain

For additional, less common, side effects, see the patient information leaflet.

Frequently Asked Questions

What is the difference between genital warts and genital herpes?


Genital herpes is a viral infection caused by the herpes simplex virus. Genital warts are caused by the human papilloma virus (HPV).


Is it legal to buy prescription drugs, like Valaciclovir, online in the UK?


Yes. However, when buying prescription medication online it is important that you verify the legitimacy of the pharmacy you are purchasing from. To ensure that you are buying from a legally operating pharmacy, you need to check that the website has a pharmacist’s name, registration number, and pharmacy logo. In addition, you should verify that the pharmacy is listed on the GPhC website. If the pharmacy is not listed there, you should NOT purchase from that company.


Where can I buy herpes medication online?


You can buy medication for herpes online here at Instant eCare. 


Is the treatment the same for both vaginal and penile herpes?


Yes, both men and women will be prescribed antiviral medications to treat and prevent herpes outbreaks.


Is the treatment for genital warts the same as the treatment for genital herpes?


No. Genital herpes and genital warts are different conditions and therefore require different treatments.


Can you get genital herpes treatment over the counter?



No. You need a prescription to get genital herpes treatment. You can get a prescription for genital herpes medications here.


Can you drink alcohol while taking this medication?


Yes, it is safe to drink alcohol while taking this medication. However, you should not exceed the weekly recommendations for alcohol consumption.

More Information
Dosage Instructions Please see medicine label for the dosage instructions.