Ivermectin Paste Dewormer

Ivermectin paste belongs to a chemical class of macrocyclic lactones called avermectins. Avermectins are fermentation by-products derived from soil-dwelling Streptomyces bacteria.

These compounds have broad-spectrum antiparasitic properties against nematodes and arthropods. Their unique mechanism of action targets parasites effectively yet has minimal impact on the cells of mammals. 

Ivermectin paste is available in a variety of commercial formulations and combination products, most commonly as an oral paste. While this medication was initially introduced as an intramuscular injection, this form was discontinued due to adverse reactions.

In North America, ivermectin paste is usually available in a prefilled syringe or tube at a 1.87% concentration, or as a 1% liquid drench.

The recommended dose is 200 µg/kg or 0.2 mg/kg of the horse’s body weight. Ask your veterinarian for help with estimating your horse’s weight to ensure you provide the correct dosage of this drug.