A New Treated is Coming. Read more.
Registered Pharmacy
24hr Free Delivery
No Registration Needed



Famciclovir is a generic antiviral treatment indicated for genital herpes. It contains an active ingredient of the same name.

You can use our secure online service to renew your prescription or buy Famciclovir online. Treatments are shipped safely using a 24-hour courier.

+3400 Trustpilot reviews
PLEASE NOTE: This treatment is not available through our online pharmacy service. This page is for information only. If you are experiencing any of the symptoms related to the condition(s) this medication treats, we strongly recommend that you see your GP in person.

This content was reviewed by a clinician on

26 April 2022
dr daniel

Dr Daniel Atkinson

(GP Clinical Lead - GMC No. 4624794) 26 April 2022
Product information

Famciclovir is an antiviral medication prescribed for the treatment of a number of herpesviral infections. We offer this treatment for herpes simplex Type 2. It is the generic version of Famvir, which has since been discontinued by the manufacturer. Famciclovir is available in three doses, 125mg, 250mg or 500mg. Individual dosage will be dependent upon the severity of symptoms, medication you already take and pre-existing medical conditions. 

‘Herpesviral infection’ is something of an umbrella term for all infections caused by herpes bacteria. This includes genital herpes, or herpes simplex Type 2. 

What is herpes simplex Type 2?

There are around eight known types of herpes infection. Two of which are known as herpes simplex, or human herpesviruses types 1 and 2, which can cause common, recurrent ‘break-outs’ of symptoms. Typically these will affect the skin, mouth, lips, eyes and genitals. 

Herpes simplex Type 1 is by far the more common of the two. According to the World Health Organisation, around 3.7 billion people under the age of 50 are thought to be infected with Type 1. It often benign and is largely asymptomatic. It can cause some symptoms, however, which typically affect the face and mouth. It can also affect the genitals, but it’s symptoms are not limited to this region nor is it considered a sexually transmitted infection. 

Herpes simplex Type 2, more commonly referred to as genital herpes, is considered a sexually transmitted infection because it largely affects the genitals and is often passed on during sexual activity.

What are the symptoms of genital herpes? 

Symptoms of genital herpes can include small blisters. These blisters can ‘burst’, leaving open, sometimes red or bloody, sores around the genitals, anus or thighs. Other symptoms include intense itching, burning or tingling sensations near or around the genitals, pain when urinating and, in women, vaginal discharge. However, symptoms of genital herpes are not always noticeable and can go unnoticed for several weeks, months or even years. 

In some cases, symptoms of genital herpes never present themselves. This is why it’s important to get regular STI tests, each time you change sexual partners. This helps to protect your own health, and limit spreading infections to others. 

Typically, symptoms of genital herpes will increase in severity when the person’s immune system becomes weakened - this can be because of factors like tiredness, stress or illness. When this happens, it is known medically as a ‘reactivation’ of symptoms. However, reactivation can also occur where there is no apparent reason.

During these reactivation periods, most particularly when the sores burst and become exposed, genital herpes is at its most infectious. It will remain highly infectious until the symptoms of reactivation fade and clear. It is highly recommended to avoid all sexual activity during these periods, regardless of whether barrier protection is utilised. 

Can I order Famciclovir online?

We currently prescribe Famciclovir for the treatment of herpes simplex Type 2, or genital herpes. It works by preventing the bacteria cells from growing and multiplying, which, in turn, limits the symptoms and chances of reactivation. This forces the bacteria into a state of remission. 

Some antiviral medicines that treat the same conditions as Famciclovir require the patient to administer a tablet five times daily. One advantage of Famciclovir over other medications in its classification is that it’s a twice a day treatment only. 

However, if you believe you have been exposed to genital herpes for the first time - we highly recommend visiting a doctor or your local GUM clinic in these first instances. We can only issue famciclovir in cases where the presence of genital herpes has been detected and confirmed by a test. We will require evidence of this. 

If you’re looking to renew a prescription for Famciclovir, you can do so using our online service. Take our medical questionnaire to have your health assessed. Pending clinical approval, our UK based pharmacy will process and dispense your treatment. It will then be shipped via a third party courier. 

Page last reviewed:  26/04/2022

It’s important to always follow the guidance your doctor or prescriber has suggested. Never exceed the recommended dosage and always read the patient information leaflet prior to initial use.

  1. Famciclovir should be taken when you notice an outbreak of symptoms. 
  2. Do not engage in sexual activity if your symptoms return. 
  3. The dosage prescribed will be dependent on the type of outbreak of symptoms. 
  4. Take one tablet at a time, with water. Swallow whole. 
  5. You can take this medication with or without food. 
  6. Never exceed the recommended dose. 
  7. Never make up for a missed-dose with a double-dose. 
  8. If you fear you’ve taken too much Famciclovir, seek urgent medical attention.

For more detailed information regarding dosage, please check the patient information leaflet.

Page last reviewed:  26/04/2022
Please read the patient information leaflet for this medicine fully before use:

Side effects

If you’re concerned about the side effects of this medicine, speak with your doctor. Not everybody will get them, but it’s important to familiarise yourself with what they could look like should you develop them. 

If you notice any signs indicative of an allergic reaction (like swelling of the skin, near the eye, throat or mouth) then you should see a doctor as soon as possible. Also seek out immediate medical attention if you develop any severe blistering on the lips, mouth, nasal passages or genitals, if you encounter unexpected bruising, reddish or purplish patches/blotches on the skin or nosebleeds, or if your skin or eyes become yellowed. 

Frequency unknown

Inflammation of the blood vessels which can include red or purple discoloration of the skin, mouth or lips which does not go away, seizures or fits, difficulty breathing or swallowing, rash, hives, wheezing, coughing, itching, light-headedness, dizziness, changes in consciousness, drop in blood pressure.

Very common (more than 1 in 10 people) 


Common (up to 1 in 10 people) 

Feeling sick, nausea, vomiting, stomach pain, diarrhoea, dizziness, rash, itching, liver function test providing irregular results. 

Uncommon (up to 1 in 100 people) 

Confusion or drowsiness (more particularly observed in the elderly), hives. 

Rare (up to 1 in 1000 people) 

Hallucinations, heart palpitations. 


Taking it with other medications

It’s highly important to disclose any medication that you currently take to your prescriber. This includes non-prescription drugs and those taken recreationally. Some medications can interfere with, or cancel out completely, the effectiveness of others. 

It’s particularly important to make us aware if you take any of the following medications: Raloxifene, which is used for the treatment of osteoporosis, Probenecid, for high blood levels and uric acid, or any medication which is prescribed in relation to the kidneys.

Conditions to look out for

You must also disclose any pre-existing medical conditions to your prescriber. Be sure to alert them to any conditions, past or present, which may affect the kidneys, if you have any conditions impacting your immune system or you have liver problems. 

Pregnancy and breastfeeding

You must alert your prescriber if you are pregnant, breastfeeding or trying for a baby. In most of these instances, Famciclovir is unlikely to be prescribed as it could pose a risk to your baby.

Driving and machinery 

Famciclovir can cause certain side effects which may impede on the ability to drive or operate machinery, this includes things like drowsiness, dizziness or confusion. If you experience any of these symptoms, do not drive. Speak to your doctor or pharmacist if you’re unsure.

Page last reviewed:  26/04/2022
Please read the patient information leaflet for this medicine fully before use:


Can I still drink alcohol? 

It is best to refrain from consuming alcohol while taking Famciclovir. 

Will I still be able to drive?

Not if you experience any side effects which may disrupt your ability to properly drive. This includes drowsiness, dizziness and confusion. 

Can I take this medicine while pregnant?

No, Famciclovir is unlikely to be prescribed if you are pregnant. Only in instances where the medical benefit is greater than the medical risks will it be prescribed. 

How should I store it?

Keep away from children in a dry environment. Do not store above 30 degrees. 

Am I allergic to anything in the medicine? 

Do not take this medication if you are allergic to its active ingredient, famciclovir. There are also a number of other ingredients, including starch pregelatinised, sodium laurilsulfate, cellulose, microcrystalline, croscarmellose sodium, silica colloidal anhydrous, stearic acid. The film coating can also be made up of the following: hypromellose (E464), titanium dioxide (E171), macrogol 4000, macrogol 6000. 

If you are allergic to any of these ingredients, do not take this medication. 

Is it available over the counter?

No, this is a prescription only treatment. Our medical team may be able to issue prescriptions, though this is subject to a clinical evaluation of your symptoms and health. 

How can I buy Famciclovir online?

If you’re suffering with the symptoms of genital herpes and have had this confirmed with a test, you can take our clinical questionnaire and have your symptoms evaluated. Pending approval from one of our GMC-registered doctors or GPhC-registered pharmacy prescribers, your order will be shipped using a third-party courier. We offer next day delivery on all orders place before 5pm, Monday to Friday. 

Page last reviewed:  26/04/2022
Treated.com is rated 4.9 out of 5 by 3424 customers on TrustPilot!
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 or a pharmacy prescriber 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