Vetrimec™ Paste is a broad-spectrum equine dewormer formulated to treat and control a wide range of internal parasites and bots in horses. This ivermectin-based paste targets large and small strongyles, pinworms, ascarids, hairworms, stomach worms, bots, lungworms, intestinal threadworms, and parasites causing summer sores and dermattis.
Effective Against:
- Large Strongyles (adults): Strongylus vulgaris (including immature forms in blood vessels), S. edentatus, S. equinus, Triodontophorus spp., Craterostomum acuticaudatum
- Small Strongyles (adults and fourth-stage larvae): Coronocyclus, Cyathostomum, Cylicocyclus, Clicodontophorus, Cylicostephanus, and Petrovinema spp.
- Pinworms: Oxyuris equi (adults and fourth-stage larvae)
- Ascarids: Parascaris equorum (adults and larvae)
- Hairworms: Trichostrongylus axei
- Large-Mouth Stomach Worms: Habronema muscae
- Bots: Gasterophilus intestinalis, G. nasalis (oral and gastric stages)
- Lungworms: Dictyocaulus arnfieldi
- Intestinal Threadworms: Strongyloides westeri
- Summer Sores: Caused by Habronema and Draschia spp. larvae
- Dermatitis: Caused by neck threadworm (Onchocerca spp.) microfilariae
Consults your veterinarian before using. All horses should be included in a regular parasite control program with particular attention being paid to mares, foals and yearlings. Foals should be treated initially at 6 to 8 weeks of age, and routine treatment repeated as appropriate. Consult your veterinarian for a control program to meet your specific needs.
Dosage and Administration
This syringe contains sufficient paste to treat one 1250 lb horse at the recommended dose rate of 91 mcg Vetrimec™ per lb (200 mcg/kg) body weight. Each weight marking on the syringe plunger delivers enough paste to treat 25 lb body weight.
- While holding plunger, turn the knurled ring on the plunger 1/4 turn to the left and slide it so the side nearest the barrel is at the prescribed weight marking.
- Lock the ring in place by making a 1/4 turn to the right.
- Make sure that the horses’s mouth contains no feed.
- Remove the cover from the tip of the syringe.
- Insert the syringe tip into the horse’s mouth at the space between the teeth.
- Depress the plunger as fas as it will go, depositing paste on the back of the tongue.
- Immediately raise the horse’s head for a few seconds after dosing.










