Famvir (Famciclovir)

Name: Famvir
Brand: Generic
SKU: 0460
Availability: InStock

Type

Product

Manufacturer

Country

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Qty-Price (USD)

There is no brand product of Famvir.

Generic Equivalent of Famvir

Type

Product

Manufacturer

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Qty-Price (USD)

Type:

Product: Famciclovir Tablet

Manufacturer: Generic

Country: Canada

Dosage: 125 mg

Qty-Price (USD):

Type:

Product: Famciclovir Tablet

Manufacturer: Generic

Country: Canada

Dosage: 250 mg

Qty-Price (USD):

Type:

Product: Famciclovir Tablet

Manufacturer: Generic

Country: Canada

Dosage: 500 mg

Qty-Price (USD):

Famvir Information

medically reviewed by Dr. HaVy Ngo, Pharmacist on April 2, 2026.

Famciclovir at CanadaPharmacyOnline.com

The original manufacturer of Famvir (famciclovir) is Novartis Pharmaceuticals. In Canada, brand-name Famvir is currently marketed by Searchlight Pharma Inc. (having transitioned from Novartis). While Novartis has discontinued the brand in several markets, including the U.S., it remains actively marketed in Canada. The brand Famvir is currently unavailable (at this pharmacy).

The generic famciclovir is widely available. In Canada, it is produced by several major pharmaceutical companies that meet Health Canada's strict quality and safety standards. Common generic manufacturers include Apotex (Apo-Famciclovir), Sandoz, Teva, and Pharmascience (pms-Famciclovir). Generic famciclovir is sourced from manufacturers that meet all regulatory standards.

Important Information about Generic Famciclovir

Generic famciclovir contains the same active ingredient as brand-name Famvir. It must meet the same effectiveness and quality standards. This means it is designed to work like Famvir. Studies have shown that generic famciclovir is bioequivalent to brand-name Famvir, meaning it has similar absorption and achieves comparable blood concentrations. However, individual responses to medication can vary due to factors such as metabolism, genetics, and other health conditions.

For more information about generic drug approval and bioequivalence, please visit Access to Generic Drugs in Canada | Canada.ca.

Dosage:

Famciclovir is available in the following oral strengths:
• Tablets: 125 mg, 250 mg, and 500 mg.

The dosage depends on the specific condition being treated. Your doctor will determine the best schedule based on your immune system and the severity of the outbreak.

Usage:

Famvir is an antiviral medication used to treat infections caused by herpes viruses. This includes shingles (herpes zoster), cold sores (herpes labialis), and genital herpes. It is also used as a suppressive therapy to prevent or reduce the frequency of future genital herpes outbreaks. While it helps the body fight the infection and reduces the time it takes for sores to heal, it is important to note that Famvir is not a herpes cure; the virus remains in the body between outbreaks.

Mechanism of Action
Famciclovir, the active ingredient in Famvir, works by inhibiting the virus's replication. Famvir is a prodrug, meaning it is inactive when you swallow it. Once it enters your system, your body converts it into its active form, called penciclovir. Famciclovir specifically targets cells infected by the virus. It uses a viral enzyme to further activate itself, ensuring it mostly ignores your healthy cells. Once active, it blocks a specific tool (DNA polymerase) that the virus needs to copy its genetic material. By halting this copying process, the medicine prevents the virus from spreading to new cells, allowing your immune system to clear the current outbreak more quickly.

Take Famvir exactly as your doctor prescribes, according to the product monograph. You can take it with or without food. For the best results, you should start taking the medication at the very first sign of an outbreak (such as tingling, itching, or redness).

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before starting Famvir, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below outlines potential side effects of Famvir (famciclovir). It is not an exhaustive list, and individual reactions can vary.

Common side effects: These are common side effects of Famvir; other side effects are possible. Contact your doctor promptly if any side effects are persistent, worsening, or concerning, or if you experience any other concerning symptoms.
• Diarrhea
• Dizziness or drowsiness
• Headache
• Nausea or vomiting

Serious Side Effects: Seek immediate medical attention or call emergency services if you experience any of the following symptoms:
• Anaphylaxis: Severe allergic reaction involving swelling of the face or throat and difficulty breathing.
• Confusion or hallucinations: Most common in elderly patients or those with kidney issues.
• Liver problems: Yellowing of the eyes or skin (jaundice) or dark urine.
• Severe skin reactions: A widespread red rash, blistering, or peeling.
• Signs of kidney issues: Changes in urine output or swelling in the feet.

Contraindications:

The following is not an exhaustive list of contraindications. Before starting Famvir, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Do not take Famvir/famciclovir if:
• Allergies: You have a known hypersensitivity to famciclovir, penciclovir (found in some cold sore creams), or any of the tablet's ingredients.

Tell your doctor about all of your medical conditions, past and present, before starting Famvir. This is crucial as certain conditions affect the drug's safety.
• Kidney Disease: Because the kidneys remove this medicine, your doctor may need to lower your dose if your kidney function is impaired.
• Lactose Intolerance: Famvir tablets contain lactose. Caution is advised if you have a rare hereditary galactose intolerance.

Drug Interactions:

Before taking Famvir, discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, please visit the prescribing information at https://www.novartis.com/us-en/sites/novartis_us/files/2022-03/Famvir_0.pdf.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, herbal supplements, recreational drugs, and any significant dietary changes, as these may interact with Famvir. Famvir may interact with other medicines, including but not limited to:
• Probenecid: A gout medication that can increase the levels of famciclovir in your blood.
• Raloxifene: May affect how the body processes this antiviral.
• Vaccines: Antiviral drugs may interfere with the effectiveness of live vaccines, such as the varicella (chickenpox) or zoster (shingles) vaccines. Consult your doctor about timing.

Pregnancy and Breastfeeding:

Famvir should be used during pregnancy only if clearly needed. While animal studies have not shown harm, there is limited data in humans. It is unknown if famciclovir passes into breast milk. Because many drugs are excreted, consult your doctor to weigh the risks before breastfeeding while on this medication.

Use in Children:

Famvir is approved for the treatment of recurrent genital herpes in adolescents 12 years of age and older. The safety and effectiveness in children under 12 have not been fully established.

Frequently Asked Questions about Famvir at Canada Pharmacy Online

Why is Famvir more affordable in Canada than in the United States?

Prescription drug prices, including Famvir, are generally lower in Canada than in the U.S. due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower prices than in the U.S., where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to offering you the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Is there a limit on how many Famvir I can order at once?

CanadaPharmacyOnline.com can dispense up to a three-month supply of Famvir per prescription from your doctor.

Can I buy Famvir from you over the counter?

No, Famvir requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes between 7 and 18 business days to receive your order from our pharmacy.

Is there a generic for Famvir?

Yes, the generic famciclovir is available.

Blog Post:

Genital Herpes is Not a Death Sentence for Your Sex Life

Latest News:

A New 3-D Skin Tissue Model Helps Identify Possible New Treatments for Herpes Simplex Virus (news published on January 27, 2026)

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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