Ivermectin 1.87% Anthelmentic and Boticide. Ivermax® Equine Apple Flavored paste Kills internal parasites in horses including bots and the arterial stages of Strongylus vulgaris. See package for more details. This syringe contains sufficient paste to treat one 1250 lb horse at the recommended dose rate of 91 mcg ivermectin per lb (200 mcg/kg) body weight. Each weight marking on the syringe plunger delivers enough paste to treat 250 lb body weight. See package insert for complete indications, precautions, warnings, residue information and use directions. Oral use in Horses Only. Removes worms and bots with a single dose. Will treat up to 1250 lb body weight.