






Fenfit Tablet
Written By Dr. Anuj Saini, MMST, MBBS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 22 May 2026 | 06:04 PM (IST)
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General Information







Your pet's medicine at a glance
Fenfit Tablet is generally administered by mouth, usually mixed with food. The dose and duration will depend on the animal species and the type of parasite being treated. Always follow your veterinarian’s instructions. To get the full benefit, do not stop treatment early or skip doses. Keep up with your veterinarian’s deworming schedule, and follow proper hygiene practices to prevent reinfection.
At normal doses, Fenfit Tablet is well-tolerated and does not usually cause any common side effects. However, in some animals, it may cause mild and temporary side effects such as vomiting, drooling, diarrhea, or decreased appetite. If the animals experience any side effects that persist or worsen, stop the treatment and consult your veterinarian immediately.
Do not use Fenfit Tablet in animals that are allergic to fenbendazole or any ingredients in the product. It should not be given to sick or severely weak animals until the illness is treated. Avoid combining this medicine with bromsalan flukicides, as this can cause serious effects like abortion in cattle or death in sheep. This medicine is considered safe for use during pregnancy and lactation.
When used in food-producing animals, follow your veterinarian’s guidance on withdrawal periods for meat, milk, or eggs to avoid drug residues in food. Do not use this medicine within 14 days of liver fluke treatment.
Uses of Fenfit Tablet in pets
- Treatment of Worm infections
Benefits of Fenfit Tablet for your pet
Fenfit Tablet is an antiparasitic medicine (dewormer) used to treat and control worm infections in animals. It is effective against many types of internal worms, including roundworms, hookworms, whipworms, tapeworms, and lungworms. It helps eliminate active infections and, at the same time, supports long-term parasite control when used as part of a regular deworming program.
Side effects of Fenfit Tablet in pets
- No common side effects seen
How can I give Fenfit Tablet to my pet?
How Fenfit Tablet works
Quick tips
- Follow your veterinarian’s instructions carefully. The dose and duration will depend on your animal’s species, weight, and type of worm infection.
- This medicine works best when given for several days in a row, usually 3 to 5 days. Stopping early can leave some worms alive and cause the infection to return.
- Mix the medicine with a small amount of food or a treat to make it easier to swallow and to improve absorption, especially in dogs, cats, and other small animals.
- Worm treatment can sometimes cause mild stomach upset. Make sure your animal has access to clean water and a calm environment.
- Monitor your animal during treatment. Mild diarrhea or drooling may occur, but if you notice severe vomiting, weakness, swelling, or breathing problems, contact your veterinarian immediately.
- Regular deworming helps prevent reinfection. Ask your veterinarian how often to repeat treatment depending on your animal’s lifestyle, exposure risk, and location.
- Keep the medicine in its original container, tightly closed, and away from heat, moisture, and sunlight.
Safety advice

Pregnancy

Breast feeding

Kidney

Liver
Frequently asked questions
Fact Box
Habit Forming
Therapeutic Class
Action Class
References
- Fenbendazole [Prescribing Information]. Thane, Maharashtra: Intervet India Pvt. Ltd.; 2022. [Accessed 04 Nov. 2025] (online) Available from:
- Fenbendazole [Prescribing Information]. Pune, Maharashtra: Veko Care Pvt. Ltd.; 2023. [Accessed 04 Nov. 2025] (online) Available from:
- Committee for Veterinary Medicinal Products (CVMP) - EMA: Fenbendazole. 2004. [Accessed 04 Nov. 2025] (online) Available from:
- Plumb's Veterinary Medication Guides: Fenbendazole. 2021. [Accessed 04 Nov. 2025] (online) Available from:
- Fenbendazole [Product Information]. Rahway, NJ: Merck & Co., Inc. [Accessed 04 Nov. 2025] (online) Available from:
- Fenbendazole [Prescribing Information]. Dhaka, Bangladesh: The Acme Laboratories Ltd.; 2021. [Accessed 04 Nov. 2025] (online) Available from:




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