Fenever Pet Suspension
Fenever Pet Suspension (fenbendazole oral suspension) — veterinary broad-spectrum dewormer for dogs and cats. Active against Toxocara, Ancylostoma, Trichuris, Taenia, and Giardia. Not approved for human use.
✓ Medisch beoordeeld door Morgan Ellis — Apotheekonderzoeker · 8 jaar ervaring · Laatst beoordeeld: mei 2026
⚡ Quick Answer — What is Fenever Pet Suspension?
Fenever Pet Suspension is a liquid fenbendazole veterinary dewormer used to treat roundworms, hookworms, whipworms, and Taenia tapeworms in dogs, cats, and livestock. Standard dose: 50 mg per kg body weight once daily for 3 consecutive days. Safe in puppies from 2 weeks of age, pregnant bitches, and debilitated or geriatric animals.
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Fenever Pet Suspension is een fenbendazole oral deworming suspension formulated specifically for dogs, cats, and other small companion animals. Each 30 ml bottle delivers the same active ingredient as well-known veterinary brands such as Panacur en Safe-Guard, in a palatable, easy-to-dose liquid format. Fenbendazole is one of the broadest-spectrum and safest dewormers available in veterinary medicine — covering roundworms, hookworms, whipworms, certain tapeworms (Taenia species), and the protozoan parasite Giardia.
A single three-day course of Fenever Pet Suspension is enough to clear most common intestinal parasite burdens, making it an ideal choice for routine deworming of puppies, kittens, and adult pets — or as an initial deworming for newly adopted animals whose parasite history is unknown.
What Is Fenever Pet Suspension?
Fenever Pet Suspension is an oral liquid formulation of fenbendazole, a benzimidazole anthelmintic (deworming) agent. Fenbendazole was first introduced to veterinary practice in the 1970s and remains the WHO-recognised standard for broad-spectrum deworming in small animal medicine. It is well tolerated across a very wide range of species, from dogs and cats to rabbits, reptiles, and livestock.
Fenever Pet Suspension is most commonly used for:
- Roundworms (Toxocara canis, Toxocara cati, Toxascaris leonina)
- Hookworms (Ancylostoma, Uncinaria)
- Whipworms (Trichuris vulpis)
- Taenia tapeworms
- Giardia spp. (protozoan intestinal parasite)
- Lungworms (certain species, such as Oslerus osleri)
How Does Fenever Pet Suspension Work?
Fenbendazole is a member of the benzimidazole family and targets parasites at the cellular level:
- Parasitic worms rely on microtubules — internal scaffolding made of tubulin protein — for normal cellular function
- Fenbendazole binds selectively to parasite β-tubulin, preventing the assembly of microtubules
- Without functional microtubules, the parasite’s cells can no longer transport glucose or nutrients
- The worm starves and is expelled in the stool over the following days
- Fenbendazole has very low affinity for mammalian tubulin, which is why it is so safe in dogs, cats, and other mammals at therapeutic doses
Fenbendazole is absorbed poorly from the gastrointestinal tract — most of the dose stays in the gut where parasites live — which further improves its safety margin.
Toepassingen en Indicaties
- Routine deworming of puppies and kittens starting at 2 weeks of age, repeated every 2–3 weeks until 3 months, then monthly until 6 months
- Adult dogs and cats — every 3 months or as directed by a veterinarian
- Pregnant bitches — daily dosing from day 40 of gestation through to 2 days post-whelping dramatically reduces transmission to puppies (a specific, veterinarian-directed protocol)
- Newly adopted or rescued pets with unknown parasite history
- Suspected or confirmed Giardia infection — fenbendazole is often a first-line choice
- Multi-pet households — all animals should be dewormed together to prevent re-infection
Fenever Pet Suspension Dosage
The standard dosing strength for most Fenever Pet formulations is 100 mg fenbendazole per ml of suspension. Always verify the concentration printed on your bottle’s label before calculating a dose.
| Species / Indication | Dosering | Duur |
|---|---|---|
| Dogs — routine deworming | 50 mg/kg body weight (0.5 ml per kg) | Once daily for 3 consecutive days |
| Cats — routine deworming | 50 mg/kg body weight | Once daily for 3 consecutive days |
| Puppies (≥2 weeks) | 50 mg/kg daily | 3 consecutive days; repeat at 3, 6, 8, 12 weeks |
| Kittens (≥6 weeks) | 50 mg/kg daily | 3 consecutive days; repeat monthly until 6 months |
| Pregnant bitches (prenatal protocol) | 25 mg/kg daily | Day 40 of pregnancy through 2 days post-whelping |
| Giardia infection | 50 mg/kg daily | 5 consecutive days (extended course) |
| Heavy whipworm burden | 50 mg/kg daily | Repeat the 3-day course at 3 weeks and 3 months |
Quick-Reference Weight Chart (at 100 mg/ml concentration)
| Pet weight | Dose volume (per day, for 3 days) |
|---|---|
| 1 kg (small kitten) | 0.5 ml |
| 2 kg | 1.0 ml |
| 5 kg (small dog / adult cat) | 2.5 ml |
| 10 kg (medium dog) | 5.0 ml |
| 20 kg (large dog) | 10 ml |
| 30 kg | 15 ml |
| 40 kg (very large dog) | 20 ml |
How to Give Fenever Pet Suspension
- Shake the bottle well before every dose — fenbendazole is a suspension, not a solution, and can settle
- Measure the correct dose using the dosing syringe provided, or a clean oral syringe
- Can be given directly into the pet’s mouth, or mixed into a small amount of wet food
- Most pets accept the flavour readily; if resistant, give by mouth with the head tilted up and follow with a treat
- Best given with or shortly after a meal — absorption is slightly improved with food
- Continue the full 3-day course even if the pet seems well
- If a dose is missed by more than 12 hours, give it as soon as you remember and then continue on the normal schedule — do not double-dose
Safety and Side Effects
Fenbendazole has an exceptional safety profile. The therapeutic dose can be exceeded by a factor of 100 in most species without clinically significant toxicity. Side effects are uncommon and usually mild.
- Vaak voorkomend: occasional soft stool, mild vomiting, or transient lethargy — usually resolve within 24 hours
- Minder vaak voorkomend: temporary loss of appetite, excessive salivation
- Zeldzaam: allergic reaction (facial swelling, hives, itching — stop treatment and contact the veterinarian)
- Very rare: elevated liver enzymes with prolonged high-dose use
In animals with a heavy worm burden, you may see dead worms passed in the stool during or shortly after treatment — this is expected and not a cause for concern.
When to Contact Your Veterinarian
- Persistent vomiting or diarrhoea for more than 24 hours
- Signs of allergic reaction (facial swelling, breathing difficulty, hives)
- Severe lethargy, loss of appetite, or weakness
- Pets under 2 weeks of age or weighing less than 500 g
- Known or suspected liver disease, kidney disease, or other serious illness
- If worms are still visible in the stool more than 1 week after completing the course
Species Considerations
- Dogs and cats: fully approved use; safe from 2–6 weeks of age
- Rabbits, guinea pigs, reptiles: off-label use is common but doses and durations differ — consult an exotics vet
- Birds: fenbendazole is highly toxic to pigeons, doves, storks, and certain vulture species — do not use
- Fish and aquatic animals: not recommended without specialist guidance
- Large livestock: this product is formulated for small companion animals; use livestock-specific formulations for cattle, sheep, horses
Bewaaradvies
- Store below 25 °C, away from direct sunlight
- Keep the bottle tightly capped when not in use
- Do not freeze
- Keep out of reach of children and untreated pets
- Most opened bottles remain usable for 4–6 weeks — discard any unused product after that window or by the printed expiry date, whichever is sooner
- Shake well before each use
Related Parasite-Control Products on MedsBase
- Wormentel (Fenbendazole tablets) — tablet formulation for larger animals or multi-pet households
- Fenforce 150 — high-strength fenbendazole tablets
- Anti-parasitic and Anti-fungal Medicines
Veelgestelde vragen
How quickly does Fenever Pet Suspension work?
Fenbendazole begins killing susceptible parasites within hours of the first dose. Dead worms are typically passed in the stool over the following 2–5 days. A full 3-day course is recommended to ensure complete clearance.
Can I give Fenever Pet Suspension to a pregnant dog?
Yes, but the protocol differs. The standard approach is 25 mg/kg daily from day 40 of gestation through to 2 days post-whelping — this dramatically reduces parasite transmission to puppies. Always confirm the protocol with your veterinarian before starting.
How often should I deworm my pet?
Puppies and kittens need frequent deworming (every 2–3 weeks until 12 weeks of age, then monthly until 6 months). Healthy adult dogs and cats are typically dewormed every 3 months, or more frequently if they hunt, eat scraps, or live with children.
Is Fenever Pet Suspension safe for kittens?
Yes — it is safe for kittens from 6 weeks of age at the standard 50 mg/kg dose. For very young kittens, use a dosing syringe marked in 0.1 ml graduations for accuracy, and confirm with a veterinarian for kittens under 6 weeks.
Can I mix Fenever Pet Suspension with food?
Yes — a small portion of wet food is usually accepted readily. Make sure the pet eats the full portion so the entire dose is consumed. Do not mix with a full meal, since uneaten food means a missed dose.
What if my pet vomits after a dose?
If vomiting occurs within 30 minutes of dosing, give the full dose again. If it occurs after 30 minutes, the dose has likely been absorbed; do not re-dose. If vomiting persists, contact your veterinarian.
Can Fenever Pet Suspension be used for heartworm?
No. Fenbendazole does not kill heartworms (Dirofilaria immitis). Heartworm prevention and treatment requires specific products such as ivermectin-based preventives or melarsomine for active infection — always under veterinary supervision.
Can I use this product on my rabbit or guinea pig?
Fenbendazole is commonly used off-label in rabbits and guinea pigs, particularly for Encephalitozoon cuniculi. Dosing and duration differ significantly from dogs and cats. Consult an exotics veterinarian before use.
How do I know if the deworming worked?
The best confirmation is a follow-up stool sample 2–3 weeks after completing the course. Your veterinarian can perform a faecal flotation to confirm the absence of parasite eggs. Visible worms stopping in the stool is a good early sign but does not replace a formal check.
Is Fenever Pet Suspension the same as Panacur?
Both products contain fenbendazole at the same concentration. Fenever Pet is the Indian-manufactured generic; Panacur is MSD Animal Health’s international brand. Clinical efficacy is identical.
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| Sterkte | 30 ml |
|---|---|
| Hoeveelheid | 1 Bottle, 2 Bottle/s, 3 Bottle/s, 6 Bottle/s |
Fenever Pet Suspension
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