DURAMECTIN (ivermectin paste) provides effective treatment and control of the following parasites in horses. Large Strongyles (adults), Small Strongyles (adults, including those resistant to some benzimidazole class compounds), Small Strongyles - Fourth-stage larvae; Pinworms (adults and fourth-stage larvae), Ascarids (adults and third- and fourth-stage larvae), Hairworms (adults), Large-mouth Stomach Worms (adults), Bots (oral and gastric stages), Lungworms (adults and fourth-stage larvae), Intestinal Threadworms (adults), Summer Sores caused by Habronema and Draschia spp. cutaneous third-stage larvae; Dermatitis caused by neck threadworm microfilariae 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. Do not underdose. Ensure each animal receives a complete dose based on a current body weight. Underdosing may result in ineffective treatment, and encourage the development of parasite resistance