Famciclovir (Famvir)
$4.80
Famvir (Famciclovir) is an antiviral that treats shingles, cold sores and genital herpes, easing pain and speeding healing.
Drug Information
5 reviews for Famciclovir (Famvir)
Famvir contains Famciclovir.
Famciclovir is an antiviral medicine used for shingles, cold sores and genital herpes. It is taken by mouth and turns into an active medicine called penciclovir in the body.
What is it used for?
- Shingles (herpes zoster)
- Cold sores
- Genital herpes, including preventing repeat outbreaks
How does it work?
Famciclovir turns into penciclovir, which blocks herpes viruses from copying their DNA inside infected cells. This helps sores heal faster and eases pain.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- Tell your doctor if you have kidney problems. Your dose may need to be lower, and you should drink plenty of water.
- Tell your doctor if you are pregnant, trying for a baby or breastfeeding.
- These medicines do not cure herpes. The virus stays quietly in the body and can come back, but treatment makes outbreaks shorter and milder.
- Herpes can spread through skin-to-skin contact even when you have no sores. Avoid sex during an outbreak and use condoms at other times.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Famvir can cause side effects, but not everybody gets them.
Common side effects
- Headache
- Feeling sick (nausea) or diarrhoea
- Feeling dizzy or tired
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Passing much less urine than usual, or pain in your lower back or side (possible kidney problems)
- Confusion, seeing or hearing things that are not there, or shaking (more likely in older people or those with kidney problems)
- Signs of an allergic reaction, such as a rash, swelling of the face or lips, or trouble breathing
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Take it exactly as your doctor tells you. You can take it with or without food.
- Start as soon as possible after the first signs of an outbreak.
- Common adult doses: shingles 500 mg three times a day for 7 days; genital herpes outbreak 1 g twice in one day, or 125 mg to 250 mg twice a day for 5 days.
- For preventing genital herpes, a common dose is 250 mg twice a day.
If you miss a dose: Take it as soon as you remember. If it is nearly time for your next dose, skip the missed one. Never take two doses at once.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Keep it in its original pack at room temperature (below 25°C / 77°F), away from heat, damp and direct sunlight. Do not use it after the expiry date.
- QHow soon should I start Famvir for shingles?
- A
Ideally within 3 days of the rash appearing. The earlier you start, the better it works.
- QDoes Famvir help with shingles pain?
- A
It helps the rash heal faster and may shorten nerve pain. You may still need a painkiller.
- QCan I drive while taking Famvir?
- A
Usually yes, but it can make some people dizzy or confused. Do not drive if you feel this way.

Charlotte Richardson –
I found Famvir on this site pretty quickly. I liked that the site did not make things complicated. No complaints about the product. I am glad I tried this site.
Lucas Jenkins –
My Famciclovir was packed with care, which I really noticed. Adding it to the cart and paying was quick.
Anika Ho –
Wanted to share my experience with this order. Everything was packed carefully and nothing was damaged. Good value for the money.
Ibrahim Choi –
I tried this site for Famciclovir after checking a couple of other places. Everything on the product page was clear, so I knew what I was getting. The confirmation emails were clear and arrived quickly. And delivery was smooth with no surprises. Great experience, I have already bookmarked the site.
Eva Wang –
The delivery took about as long as I was told. They answered my email within a day. Another good thing: prices here are easy on the pocket. I would order here again.