Fenforce 150
Fenforce 150 (fenbendazole 150 mg) — veterinary tablet dewormer for dogs and small animals. Standard 50 mg/kg once daily for 3 consecutive days. Veterinary use only — not approved for humans.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
Quick Answer — What is Fenforce 150?
Fenforce 150 is a fenbendazole tablet at 150 mg from GHB Lifesciences, formulated for veterinary use in dogs, cats, and (label-dependent) livestock. Fenbendazole is a benzimidazole anthelmintic active against roundworms, hookworms, whipworms, some tapeworms, and the protozoan Giardia. Standard canine dose: 50 mg/kg once daily for 3 days, repeated at 3 weeks if needed.
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What is Fenforce 150?
Fenforce 150 is fenbendazole 150 mg from GHB Lifesciences, positioned for canine and small-animal use. Fenbendazole is a broad-spectrum benzimidazole used in veterinary medicine since the 1970s. It is one of the most reliable single-agent dewormers in canine and feline practice and is a standard component of horse and livestock parasite-control programmes.
Mechanism of action
Fenbendazole binds β-tubulin in parasite cells, preventing microtubule polymerisation. This blocks parasite glucose uptake and depletes glycogen stores — the worm starves over 2–3 days. The drug has very low oral bioavailability (~1–2% in dogs and humans), which is therapeutically advantageous: high concentrations in the gut lumen where intestinal worms live, near-zero systemic exposure.
Fenbendazole is metabolised in the liver to oxfendazole (the sulfoxide) and a sulfone metabolite, both of which retain anthelmintic activity. Excretion is primarily faecal.
Fenforce 150 indications and dose
| Species & indication | Dose | Schedule |
|---|---|---|
| Dogs — routine roundworm/hookworm/whipworm | 50 mg/kg | Once daily for 3 consecutive days |
| Dogs — Giardia | 50 mg/kg | Once daily for 5 consecutive days |
| Cats — roundworm/hookworm | 50 mg/kg | Once daily for 3 consecutive days |
| Puppies/kittens (> 6 wk) | 50 mg/kg | Once daily for 3 days, then routine deworming schedule |
| Pregnant bitches (last 3 weeks & lactation) | 25 mg/kg | Daily from day 40 of pregnancy through 14 days post-whelping |
Tablets can be hidden in food, given whole, or crushed and mixed with a small amount of wet food. Most dogs accept fenbendazole readily.
Side effects in animals
- Common: usually none; occasionally vomiting or transient soft stool
- Uncommon: mild lethargy for 24 hours; reduced appetite
- Rare: hypersensitivity reactions, bone marrow suppression with prolonged or very high doses
Drug interactions and cautions
- Bromsalan flukicides (in cattle) — do not combine; severe interaction reported
- Praziquantel — commonly co-administered for tapeworm cover; no negative interaction
- Pyrantel — may be combined for broader coverage
- Contraindicated alongside doramectin in collie-breed dogs without MDR1 testing
Storage
Store Fenforce 150 below 25°C, away from direct light and moisture. Keep in original blister. Keep out of reach of children — this is a veterinary product.
Why order from MedsBase
Fenforce 150 is supplied from a WHO-GMP certified manufacturer, packaged discreetly, and shipped worldwide. Every order is covered by our Reshipment Assurance Policy — you never wear the cost of a lost parcel.
Frequently Asked Questions
How do I dose Fenforce 150 for my dog?
50 mg per kg of body weight, once daily for 3 consecutive days. A 10 kg dog needs 500 mg per dose; a 25 kg dog needs 1250 mg per dose. Adjust tablet count to deliver the calculated mg. Repeat the 3-day course at 3 weeks if needed.
Can my puppy take Fenforce 150?
Yes from 6 weeks of age. The standard puppy schedule is fenbendazole at 2, 4, 6, 8 weeks then monthly to 6 months. Lower doses are used in pregnant bitches.
Will Fenforce 150 kill all worms my dog has?
Fenbendazole covers the major intestinal nematodes (roundworm, hookworm, whipworm) and Giardia. It does NOT reliably kill all tapeworm species — for tapeworm cover, add praziquantel or use a combined product.
What if my dog vomits the dose?
If vomiting occurs within 1 hour, repeat the full dose. Beyond 1 hour, the drug is partially absorbed; do not redose — just continue the schedule.
Can I give Fenforce 150 to my cat?
Yes, at the same 50 mg/kg single-daily dose for 3 days. Cats often dislike the taste of suspension; try mixing into a small amount of tuna or wet food.
Is fenbendazole safe in pregnant dogs?
Yes. It is one of the safer dewormers in pregnancy. Standard protocol is 25 mg/kg daily from day 40 of pregnancy through 14 days post-whelping — this prevents transmammary roundworm transfer to the puppies.
Can humans take Fenforce 150?
No. Fenforce 150 is a veterinary product not approved for human use. For human anthelmintic needs use albendazole, mebendazole, ivermectin, niclosamide, or praziquantel from this catalogue. The viral ‘fenbendazole for cancer’ story has no controlled human-trial evidence behind it.
Should I deworm a healthy-looking dog?
Yes. Most intestinal worms cause minimal visible symptoms in adult dogs but shed eggs into the environment, infecting other animals (and posing zoonotic risk to children). Routine 3-monthly deworming is standard veterinary advice in most countries.
Can I combine Fenforce 150 with flea and tick treatment?
Yes. Fenbendazole has no negative interaction with topical flea/tick treatments (frontline, advantage, isoxazolines). Many comprehensive parasite-control plans combine the two.
What about my puppy’s littermates?
Treat all puppies in the litter on the same days. The mother (bitch) should also be on the lactation deworming schedule. Bedding should be cleaned to reduce environmental egg load.
See also: Ivermectin & Fenbendazole Combo Pack — Iverheal 12 mg paired with Wormentel 222 mg for protocol-driven multi-agent antiparasitic dosing.
Fenforce 150 is a fenbendazole 150 mg veterinary tablet for nematode and Giardia coverage in dogs and cats; for human protocol-based dosing pairing fenbendazole with ivermectin, the Ivermectin + Fenbendazole Combo Pack (Iverheal 12 mg + Wormentel 222 mg) kit is the matching multi-agent option.
Other Veterinary Antiparasitics
- Wormentel (fenbendazole 222/444/500 mg)
- Fenforce 150 (fenbendazole)
- Fenever Pet Suspension (fenbendazole)
- Vetina CanWorm Suspension (fenbendazole)
- Ivermectin & Fenbendazole Combo Pack
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Ranked by recent MedsBase order volume — what other customers in this category are picking.
| Strength | 150 mg |
|---|---|
| Quantity | 30 Tablet/s, 60 Tablet/s, 90 Tablet/s, 180 Tablet/s, 400 Tablet/s, 800 Tablet/s |
Fenforce 150
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