Zimecterin Gold Dewormer Paste for Horses is a highly effective dewormer.  It controls 47 species of equine parasites which include tapeworms, roundworms, and bots. This dewormer is for use in horses and donkeys over 2 months of age. Zimecterin Gold has not been tested in breeding stallions or breeding, gestating or lactating mares.  It contains ivermectin and praziquantel as its active ingredients. This combination of ingredients is highly known for its superior efficacy in treating equines for bot infections, cestodes, and nematodes. It comes with a 0.26-ounce syringe applicator that treats up to 1,250 pounds of body weight.