Famciclovir
Antiviral treatment Famciclovir (Famvir) addresses viral infections. Activity involves stopping viral replication, which may reduce symptoms during an outbreak. Available formulations are listed below.
Key points
- As a nucleoside analogue, it interferes with the virus’s ability to copy its DNA, easing outbreaks rather than curing the underlying infection.
- Sold as Famvir and used against genital herpes, herpes zoster and herpes simplex, supplied as film-coated tablets.
- Targets the viral polymerase enzyme, curbing how quickly the virus spreads through the body during an active infection.
What is Famciclovir?
Famciclovir is a synthetic nucleoside analogue in the Antivirals class, used to manage outbreaks of Herpes Zoster, Herpes Simplex and Genital Herpes. It is supplied as film-coated tablets, which give consistent dosing across a treatment course.
How does Famciclovir work?
Mechanisms operate by suppressing viral DNA synthesis. By targeting the viral polymerase, the medication slows the spread of the virus within the body.
Safety overview for Famciclovir
What to check before using this medicine
Medical history concerning kidney function requires review prior to commencing the medication. Allergies to similar antiviral compounds should be identified.
Possible reactions and tolerability
Common responses include mild headache or nausea. Uncommon reactions may involve dizziness or confusion, particularly in older individuals.
Interactions and health factors
Other medications, including those for gout or stomach acid, may necessitate adjustment of administration timing. Product labelling and verified clinical sources remain the correct references for specific contraindications, interactions and reactions.
Further reading
What is famciclovir used for?
Famciclovir is an antiviral medicine used to manage outbreaks of genital herpes, herpes simplex and herpes zoster. It is supplied as film-coated tablets.
How does famciclovir work?
Famciclovir is a prodrug of penciclovir, which inhibits viral DNA polymerase and so interrupts viral DNA synthesis and replication. This stops the virus from multiplying, allowing the body to manage the infection.
How long does famciclovir take to work?
Famciclovir usually starts to work within 24 to 48 hours. How long the effect lasts varies by indication.
What are the side effects of famciclovir?
Common responses include headache and nausea. Less common reactions can include dizziness, abdominal discomfort or confusion, particularly in older individuals. Speak to a doctor or pharmacist if you are concerned about any reaction.
Can famciclovir be taken with other medicines?
Other medications, including those for gout or stomach acid, may mean that the timing of doses needs to be adjusted. Famciclovir interacts with probenecid. A doctor or pharmacist can advise on what fits your situation.
Who should not take famciclovir?
People with a hypersensitivity to famciclovir should not take it. Kidney function needs to be reviewed before starting this medicine, and allergies to similar antiviral compounds should be identified. Ask a doctor or pharmacist if you are unsure.
What famciclovir products are available?
Products containing famciclovir include Famvir. Compare forms, strengths and packs in the listings above.
Is famciclovir available over the counter in Thailand?
Yes. In Thailand famciclovir is sold by pharmacists without a prescription, and Yasabai does not ask for one either. We are an online store, not a dispensing pharmacy; we arrange your order and delivery on your behalf.
Ordering without a prescription →Do you deliver famciclovir to Thailand?
Yes. Our pharmacy partners ship from India to Thailand and across Asia in discreet packaging. Standard Airmail takes up to 3 weeks; Express Tracked Courier takes up to 1 week.
How ordering works →