Famciclovir 250mg

What Is Famciclovir 250mg Used For?

For Humans:

Famciclovir 250mg is an antiviral medicine. It helps fight infections caused by the herpes virus.

You may use it to treat:

• Cold sores (around the mouth)

• Shingles (painful rash on one side of the body)

• Genital herpes (painful blisters in the genital area)

It doesn't cure herpes, but it helps make symptoms go away faster and can lower the chance of the virus coming back.

For Cats:

Vets use Famciclovir to treat:

• Feline herpesvirus (FHV-1) — a virus that causes sneezing, eye discharge, and breathing problems

• Eye infections linked to herpes in cats

It helps reduce symptoms and supports faster healing, but it won’t cure the virus completely.

How to Use Famciclovir 250mg?

For Humans:

• Take by mouth with or without food

• Use a full glass of water to swallow the tablet

• Start treatment early (within 48 hours of symptoms)

• Take the medicine at the same time each day

Important tips:

1. Don’t skip doses.

2. Don’t stop early, even if you feel better.

3. Wash hands before and after taking it.

For Cats:

• The vet will decide the dose based on your cat’s weight and condition.

• Usually given as a pill or compounded liquid.

• Mix with food if needed, but check with the vet first.

Pet Owner Tips:

• Give the full course as prescribed.

• Store in a safe place away from other pets or kids.

• Never use your own pills for your cat without asking the vet.

Dosage Instructions

For Humans:

Doses vary depending on what you're treating:

1. Cold sores:

   • 1500mg as a single dose

2. Genital herpes (first time):

   • 250mg three times a day for 7–10 days

3. Genital herpes (recurring):

   • 125mg twice a day for 5 days

4. Shingles:

   • 500mg three times a day for 7 days

Famciclovir for cats dosage chart:

Usual dosage:

• 40–90 mg per kg, given twice daily

Your vet may adjust the amount based on:

• How bad the symptoms are

• Your cat’s age and weight

• Other health conditions

Never adjust your pet’s dose without your vet’s advice.

Famciclovir Side Effects

For Humans:

Some people may have side effects. Most are mild, but talk to your doctor if they bother you.

Common side effects:

• Headache

• Dizziness

• Nausea or upset stomach

• Tiredness

Serious (but rare):

• Confusion

• Hallucinations

• Liver problems (look for yellow skin or eyes)

Famciclovir For Cats:

Cats may also have side effects, especially if the dose is too high.

Watch for:

• Vomiting or diarrhea

• Less appetite

• Tiredness or hiding

• Changes in behavior

Call your vet if you notice anything unusual.

Drug Interactions

For Humans:

Famciclovir may not mix well with some other medicines.

Tell your doctor if you take:

• Probenecid (for gout)

• Other antivirals (like acyclovir)

• HIV medications

• Medicine for kidney problems

Avoid alcohol, as it may increase dizziness or upset your stomach.

For Cats:

Always tell your vet about:

• Any other meds your cat takes (including supplements)

• If your cat had a bad reaction to medicine before

Mixing drugs without vet approval can be dangerous.

Warnings

For Humans:

• Not for children under 18

• Tell your doctor if you’re pregnant or breastfeeding

• People with kidney disease may need a lower dose

• Use with caution if you have problems with your immune system

Don’t share this medicine with others, even if they have the same symptoms.

For Cats:

• Not safe for kittens under 4 weeks unless your vet says so

• Cats with kidney issues need special dosing

• Tell the vet if your cat is pregnant or nursing

Never give human meds to your cat unless your vet says it’s okay.

Storage

For Humans:

• Keep Famciclovir in a cool, dry place

• Store at room temperature (68°F to 77°F or 20°C to 25°C)

• Keep away from sunlight, heat, and moisture

• Don’t store in the bathroom

Keep out of reach of children and pets.

For Cats:

• Store compounded liquid or pills per the vet’s instructions

• Use a child-proof bottle if possible

• Don’t use expired medicine

• Always check for changes in smell or color before giving

FAQ

Where can I buy Famciclovir 250mg over the counter?

Can I buy Famciclovir 250mg without a prescription?

Where can I buy famciclovir for cats?

What is the price of famciclovir 250 online?