Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism. Zimecterin (ivermectin) Paste provides effective control of the following parasites in horses: Large Strongyles (adults) - Strongylus vulgaris (also early forms in blood vessels). Strongyles including those resistant to some benzimidazole class compounds (adults and fourth-stage larvae) - Cyathostomum spp. Cylicocylclus spp. Cylicostephanus spp, Cylicodontophorus spp; Pinworms (adults and fourth-stage larvae) - Oxyuris equi; Ascarids (adults and third- and fourth-stage larvae) - Parascaris equorum; Hairworms (adults) - Trichostrongylus axei; Large-mouth Stomach Worms (adults) - Habronema muscae; Bots (oral and gastric stages) - Gastrophilus spp; Lungworms (adults and fourth-stage larvae) - Dictyocaulus arnfieldi; Intestinal Threadworms (adults) - Strongyloides westeri Summer Sores caused by Habronema and Draschia spp cutaneous third-stage larvae: Dermatitis caused by neck threadworm microfilariae, Onchocerca sp. Parasite Control Program: 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. ZIMECTERIN (ivermectin) Paste effectively controls gastrointestinal nematodes and bots of horses. Regular treatment will reduce the chances of verminous arteritis caused by Strongylus vulgaris. Animal Safety - ZIMECTERIN (ivermectin) Paste may be used in horses of all ages, including mares at any stage of pregnancy. Stallions may be treated without adversely affecting their fertility.