Contains 1.87% ivermectin.

For use in horses of all ages, including mares at any stage of pregnancy. Stallions may be treated without adversely affecting fertility. DuraMectin (ivermectin) Paste is for the treatment and control of large and small strongyles, pinworms, ascarids, hairworms, stomach worms, bots, lungworms and threadworms. Provides broadest spectrum parasite control available. Kills 35 species and stages combined of worms and bots.

Each syringe treats up to 1,250 lbs body weight.