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compositionComposition:FAMCICLOVIR-500MG
prescription
Prescription Medicine
info
Famcimac 500 Tablet 3's
Famcimac 500 Tablet 3's
Famcimac 500 Tablet 3's
Famcimac 500 Tablet 3's
Famcimac 500 Tablet 3's

Famcimac 500 Tablet is an antiviral drug used to treat viral infections. It plays a vital role in treating cold sores (an inflamed blister in or near the mouth, caused by infection with the herpes simplex virus), genital herpes (a common sexually transmitted infection marked by genital pain and sores), and herpes zoster (a viral infection that causes a painful rash).

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Written By Santoshini Reddy G , M Pharmacy
Reviewed By Bayyarapu Mahesh Kumar , M Pharmacy
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More about the Product

Composition :

FAMCICLOVIR-500MG

Manufacturer/Marketer :

Macleods Pharmaceuticals Ltd

Consume Type :

Oral

Expires on or after :

Jan-27

Return Policy :

Not Returnable

About Famcimac 500 Tablet

Famcimac 500 Tablet is used to treat genital herpes (A common sexually transmitted infection marked by genital pain and sores), and herpes zoster (a viral infection that causes a painful rash). Famcimac 500 Tablet does not cure herpes, but it prevents the infection from spreading and treats its symptoms.

Famcimac 500 Tablet contains famciclovir, which prevents viral multiplication in human cells.

In some cases, you may experience headaches, feeling dizzy, feeling or being sick (nausea or vomiting), diarrhoea, and itching. Most of these side effects do not require medical attention and gradually resolve over time. However, if the side effects persist, reach out to your doctor.

Do not take Famcimac 500 Tablet if you are allergic to Famcimac 500 Tablet, famciclovir, or any of its ingredients. Check with your doctor if you're pregnant, breastfeeding, or taking any other prescribed or non-prescribed medicines. Use protection while having sexual intercourse to avoid the transfer of genital herpes (a sexually transmitted disease) to your partner.

Uses of Famcimac 500 Tablet

Famcimac 500 Tablet is used in the treatment of herpes zoster skin infection(shingles) and genital herpes. The detailed uses of Famcimac 500 Tablet are as follows:

  • Treats Herpes Zoster (Shingles): Famcimac 500 Tablet helps relieve pain and rash associated with shingles by stopping the replication of the varicella-zoster virus.
  • Manages Genital Herpes: Famcimac 500 Tablet used to treat and suppress recurrent outbreaks of genital herpes caused by herpes simplex virus (HSV).

Key Benefits

  • Reduces pain and expedites the healing of skin rashes, which aids in the treatment of shingles (herpes zoster).
  • Minimizes the severity and duration of genital herpes outbreaks.
  • When used early, it efficiently treats herpes labialis, or cold sores.
  • When taken as preventive therapy, it reduces the chance of recurring herpes episodes.
  • Lessens shingles-related nerve pain (post-herpetic neuralgia).
  • Aids those with compromised immune systems in controlling herpes infections.
  • Reduces viral shedding, potentially preventing the infection from spreading to other people.
Side effects of Famcimac 500 Tablet
Dealing with Medication-Induced Headache:
  • Hydrate your body: Drink enough water to prevent dehydration and headaches.
  • Calm Your Mind: Deep breathing and meditation can help you relax and relieve stress.
  • Rest and Recharge: Sleep for 7-8 hours to reduce headache triggers.
  • Take rest: lie down in a quiet, dark environment.
  • Cold or warm compresses can help reduce tension.
  • Stay Upright: Maintain good posture to keep symptoms from getting worse.
  • To treat headaches naturally, try acupuncture or massage therapy.
  • Over-the-counter pain relievers include acetaminophen and ibuprofen.
  • Prescription Assistance: Speak with your doctor about more substantial drug alternatives.
  • Severe Headaches: Seek emergency medical assistance for sudden, severe headaches.
  • Frequent Headaches: If you get reoccurring headaches, consult your doctor.
  • Headaches with Symptoms: Seek medical attention if your headaches include fever, disorientation, or weakness.
Overcome Medication-Induced Nausea: A 9-Step Plan
  • Inform your doctor about the nausea and discuss possible alternatives to the medication or adjustments to the dosage.
  • Divide your daily food intake into smaller, more frequent meals to reduce nausea.
  • Opt for bland, easily digestible foods like crackers, toast, plain rice, bananas, and applesauce.
  • Avoid certain foods that can trigger nausea, such as fatty, greasy, spicy, and smelly foods.
  • Drink plenty of fluids, such as water, clear broth, or electrolyte-rich beverages like coconut water or sports drinks.
  • Use ginger (tea, ale, or candies) to help relieve nausea.
  • Get adequate rest and also avoid strenuous activities that can worsen nausea.
  • Talk to your doctor about taking anti-nausea medication if your nausea is severe.
  • Record when your nausea occurs, what triggers it, and what provides relief to help you identify patterns and manage your symptoms more effectively.
Here are the precise steps to cope with diarrhoea caused by medication usage:
  • Inform Your Doctor: Notify your doctor immediately about your diarrhoea symptoms. This allows them to adjust your medication or provide guidance on managing side effects.
  • Stay Hydrated: Drink plenty of fluids to replace lost water and electrolytes. Choose water, clear broth, and electrolyte-rich drinks. Avoid carbonated or caffeinated beverages to effectively rehydrate your body.
  • Follow a Bland Diet: Eat easy-to-digest foods to help firm up your stool and settle your stomach. Try incorporating bananas, rice, applesauce, toast, plain crackers, and boiled vegetables into your diet.
  • Avoid Trigger Foods: Steer clear of foods that can worsen diarrhoea, such as spicy, fatty, or greasy foods, high-fibre foods, and dairy products (especially if you're lactose intolerant).
  • Practice Good Hygiene: Maintain good hygiene to prevent the spread of infection. To stay healthy, wash your hands frequently, clean and disinfect surfaces regularly, and avoid exchanging personal belongings with others.
  • Take Anti-Diarrheal Medications: If your doctor advises, anti-diarrheal medications such as loperamide might help manage diarrhoea symptoms. Always follow your doctor's directions.
  • Keep track of your diarrhoea symptoms. If they don't get better or worse or are accompanied by severe stomach pain, blood, or dehydration signs (like extreme thirst or dark urine), seek medical help.
To prevent, manage, and treat Constipation caused by medication usage, follow these steps:
  • Preventing Vomiting (Before it Happens)
  • Take medication exactly as prescribed by your doctor. This can help minimize side effects, including vomiting.
  • Having a small meal before taking your medication can help reduce nausea and vomiting.
  • Talk to your doctor about taking anti-nausea medication along with your prescribed medication.
  • Managing Vomiting (If it Happens)
  • Try taking ginger in the form of tea, ale, or candy to help alleviate nausea and vomiting.
  • What to Do if Vomiting Persists
  • Consult your doctor if vomiting continues or worsens, consult the doctor for guidance on adjusting your medication or additional treatment.
  • Rest well; get enough sleep.
  • Eat a balanced diet and drink enough water.
  • Manage stress with yoga and meditation.
  • Limit alcohol and caffeine.
  • Physical activities like walking or jogging might help boost energy and make you feel less tired.
  • Drink water or other clear fluids.
  • To prevent worsening of pain, limit intake of tea, coffee, or alcohol.
  • Include bland foods like rice, toast, crackers, and rice in your diet.
  • Avoid lying down immediately after eating as it may cause indigestion or heartburn.
  • Avoid acidic and spicy food as it may cause indigestion.

Directions for Use

  • Famcimac 500 Tablet can be taken with or without food, or as advised by a doctor.
  • Follow your doctor’s recommendations on the dosage and timing of this medication to achieve optimal results.
  • Swallow it as a whole with a glass of water.
  • Do not crush, chew, or break it.

How Famcimac 500 Tablet Works

Famcimac 500 Tablet contains famciclovir, which is an antiviral medication. It is used in treating viral infections by preventing the multiplication of viruses in human cells. As a result, this stops the proliferation of viruses, slowly clearing up the viral infection.
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Alcohol

Unsafe

Consumption of alcohol with Famcimac 500 Tablet may increase the risk of side effects.

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Pregnancy

Consult your doctor

Famcimac 500 Tablet is a pregnancy Category B medicine. It is not known whether Famcimac 500 Tablet will affect pregnant women or the fetus or not. Hence, the intake of Famcimac 500 Tablet should be prescribed only under medical supervision.

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Breast Feeding

Consult your doctor

Famcimac 500 Tablet is a pregnancy Category B medicine. It is not known whether Famcimac 500 Tablet passes through the milk of breastfeeding women. Hence, Famcimac 500 Tablet should only be taken if prescribed by a doctor and under medical supervision.

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Driving

Unsafe

Famcimac 500 Tablet can cause dizziness, drowsiness or confusion. So, operating machinery which requires concentration should be avoided.

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Liver

Caution

Famcimac 500 Tablet to be taken with caution, especially if you have a history of liver disease. The dose may have to be adjusted by your doctor.

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Kidney

Caution

Famcimac 500 Tablet to be taken with caution, especially if you have a history of kidney disease. The dose may have to be adjusted by your doctor.

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Children

Unsafe

Famcimac 500 Tablet should not be given to children below the age of 12 years.

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Heart

Safe if prescribed

Famcimac 500 Tablet is safe for use in heart patients if prescribed by the physician.

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Geriatrics

Caution

Famcimac 500 Tablet can be given in elderly patients with extreme caution and only if prescribed by the doctor. Dose adjustments may be needed.

What if I have taken an overdose of Famcimac 500 Tablet

Do not take more than the prescribed dose of Famcimac 500 Tablet as it may affect the kidneys. If the dose is not adjusted properly, it may, in rare cases, result in kidney failure in those who already have kidney problems. If you suspect you have taken an overdose, please consult a doctor immediately.

Diet & Lifestyle Advise

Diet:

  • Try to include heart-healthy omega-3 fatty acid-containing foods in your daily diet.
  • Include turmeric or yellow mustard in your diet to help prevent constipation caused by antiviral drugs, and increase your fluid intake to stay hydrated.
  • Drink plenty of water to improve the body's food processing.
  • Avoid sugary foods such as cake, cookies, packaged baked food or soda. Also, avoid heavy salt foods.
  • Avoid foods containing saturated fats, such as fried foods, fatty cuts of meat, sour cream, butter, and other high-fat dairy products, as they may lead to weight gain and result in fatty liver.

Lifestyle changes:

  • To avoid infecting people with herpes, practice good personal cleanliness.
  • During active outbreaks, stay away from intimate physical or sexual contact.
  • Recurrences of herpes can be brought on by stress, so manage it using relaxing techniques.
  • To strengthen your immune system and aid in your recuperation, get enough sleep.

Hygeine:

  • Clean your hands often, especially after handling afflicted areas.
  • To encourage healing, keep the affected area dry and clean.
  • To stop the infection from spreading, don't share personal goods like lip balms, razors, or towels.

Health Queries

Is herpes zoster (shingles) contagious to others, and what antiviral medications are used to treat it?

Y. Lakshmi Thulasi

Y. Lakshmi Thulasi

Pharm-D (Post baccalaureate)

Shingles itself is not contagious, meaning someone cannot catch shingles directly from you. However, the virus can be spread to anyone who is not immune to chickenpox, causing them to develop chickenpox instead. This only occurs through direct contact with blister fluid, so keeping the rash covered makes the risk of transmission very low. To treat shingles and speed up recovery, antiviral medications are used. The most common generic options are acyclovir, valacyclovir, and famciclovir. These prescription medications are very effective at reducing pain and the duration of symptoms, especially when started within 72 hours of the rash appearing.

Have a query?

How Soon It Starts Working

  • The time required for Famcimac 500 Tablet to start to work: The time required for Famcimac 500 Tablet to show its action is unknown.
  • The time for which the effects of Famcimac 500 Tablet last: The duration of action for Famcimac 500 Tablet is unknown.

What if you forget to take Famcimac 500 Tablet

Take the missed dose of Famcimac 500 Tablet as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your schedule. Do not take two doses at the same time to make up for the missed one.

Storage

• Store in a cool and dry place away from sunlight. • Keep out of sight and reach of children. • Non cold chain - To be stored in cool places at 10ºC to 25ºC or below 30ºC.

Drug Warnings

  • Do not take Famcimac 500 Tablet if you are allergic to Famcimac 500 Tablet or any of its ingredients.
  • Inform your doctor about all other OTC medications, vitamins, nutritional supplements, and herbal products that you are already taking.
  • Take Famcimac 500 Tablet with caution if you have kidney disease or liver disease.
  • Do not drive a car or operate any machinery which requires concentration, as Famcimac 500 Tablet may cause dizziness.
  • Use protection while having sexual intercourse to avoid the transfer of genital herpes (a sexually transmitted disease) to your partner.
  • If you have a weak immune system, please inform your doctor before taking Famcimac 500 Tablet as a dose adjustment may be required.
  • Inform your doctor before taking Famcimac 500 Tablet if you have a known intolerance to some sugars, e.g. lactose.

Drug-Drug Interactions

verifiedApollotooltip

Drug-drug interactions: Inform your doctor if you are taking any of these medicines, as there may be an interaction.

Medication used to treat gout (probenecid)
• Potential effect: May increase the level of Famcimac 500 Tablet.
Anti-viral medicines (acyclovir)
• Potential effect: May increase the risk of side effects.
Painkillers (Ibuprofen, Aspirin)
• Potential effect: May increase the risk of kidney problems.

Drug-Food Interactions: Avoid alcohol consumption while on this medication.

Drug-Disease Interactions: Inform your doctor if you have kidney, immune system, or liver problems.

No Drug - Drug interactions found in our data. We may lack specific data on this medicine and are actively working to update our database. Consult your doctor for personalized advice

Drug-Drug Interactions

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Drug-Food Interactions

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No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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All Substitutes & Brand Comparisons

Habit Forming

No

Therapeutic Class

[ANTIVIRALS]

FAQs

Famcimac 500 Tablet is used to treat viral infections. It plays a vital role in treating cold sores (an inflamed blister in or near the mouth caused by infection with the herpes simplex virus), genital herpes (a common sexually transmitted infection marked by genital pain and sores), and herpes zoster (a viral infection that causes a painful rash).
Famciclovir belongs to a class of drugs called antivirals. It works by preventing the replication of viral DNA that is necessary for viruses to multiply, thereby stopping the spread of the herpes virus in the body. Famciclovir is a prodrug that is converted to penciclovir in the body. Famciclovir does not cure or stop the spread of herpes. Famciclovir relieves pain and itching, and also heals and prevents sores associated with herpesvirus infections.
If you miss a dose of Famcimac 500 Tablet, take the missed dose as soon as you remember it. However, if it's almost time for the next dose, do not take a double dose to make up for a missed one.
No, Famcimac 500 Tablet does not cure herpes infection. Instead, it reduces the pain and itching caused by it and prevents the formation of new sores.
Famcimac 500 Tablet should be taken as prescribed by your doctor. Abrupt stopping of this medicine may lead to resistance to other medications, making the infection difficult to treat.
The overdose of Famcimac 500 Tablet leads to an increased risk of side effects that can be fatal sometimes. In people with kidney problems, it rarely leads to kidney failure on overdose. So, consult a doctor immediately if you accidentally overdose on this medicine.
No, even while you are taking Famcimac 500 Tablet, you can infect others. Herpes infections are contagious, so avoid letting infected areas come into contact with other people. Do not touch your eyes after touching an infected area. Wash your hands often to prevent spreading the infection to others. You should practice safe sex by using condoms and avoid sex if you have genital sores or blisters.
Famcimac 500 Tablet is effective if used in the dose and duration prescribed by your doctor. Do not stop taking it even if you feel better as discontinuing too early may cause the symptoms to reoccur or worsen.
Before starting treatment with Famcimac 500 Tablet, tell your doctor if you have any other health problems, such as liver or kidney-related issues, as certain medical conditions may affect your treatment and may even require changes in the dose. Let your doctor know about all the other medicines you are taking because they may affect, or be affected by Famcimac 500 Tablet. Also, inform your doctor if you are pregnant, breastfeeding or planning to conceive.
Although serious side effects are rare, if you experience them, you should consult your doctor immediately. These rare side effects include blistering or peeling rash, hives, yellow skin or eyes, loss of consciousness, unusual bruising or bleeding, fits, hallucinations, difficulty in breathing, and swelling of the face, lips, tongue, or throat.
Elderly people (above 65 years of age) are at higher risk of experiencing Famcimac 500 Tablet side effects because their kidneys do not eliminate the medicine from their bodies as quickly as those of a younger person. While taking Famcimac 500 Tablet, elderly patients should drink plenty of water and have their kidney function checked. Therefore, a lower dose should be recommended for these patients and should be monitored for neurological problems.
If someone takes more than the recommended dose of Famcimac 500 Tablet accidentally over several days, it may cause Famcimac 500 Tablet overdose and result in vomiting, nausea, headache and confusion. In such a case, please consult your doctor.
Patients with impaired immunity or advanced HIV disease have reported resistance to Famcimac 500 Tablet. If you are not reacting to Famcimac 500 Tablet, the possibility of drug resistance should be checked.

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.

Reference

  1. Electronic Medicines Compendium (EMC). Pil.1432 Patient Information Leaflet (PIL). Cheshire, UK: Datapharm; 2025. [Accessed on 02 Jun. 2026] Check here
  2. Drugs.com Clinical Review Team. Famciclovir Drug Interactions Reference. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026] Check here
  3. Mayo Clinic Staff. Syc 20356161 Inhalation and Dosage Monograph. Rochester, MN: Mayo Foundation for Medical Education; 2025. [Accessed on 02 Jun. 2026] Check here
  4. Famciclovir Famciclovir. 1994 Check here
  5. Famciclovir 250 mg film-coated tablets- Summary of Product Characteristics (SmPC) - (emc) [Internet]. Medicines.org.uk. [Accessed on 7 Jan 2026] Check here
  6. Famciclovir 250 mg film-coated tablets- Patient Information Leaflet (PIL) - (emc) [Internet]. Medicines.org.uk. [Accessed on 7 Jan 2026] Check here
  7. Mubareka S, Leung V, Aoki FY, Vinh DC. Famciclovir: a focus on efficacy and safety. Expert Opin Drug Saf. 2010 Jul;9(4):643-58.[Accessed on 12 Mar 2025]Check here

Country of origin

India

Manufacturer/Marketer address

Atlanta Arcade, Marol Church Road, Andheri (East), Mumbai - 400059, INDIA.
Other Info - FAM0014

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