Coopers Panacur 100 Oral Anthelmintic is a ready-to-use fenbendazole worm drench for the control of benzimidazole-sensitive internal parasites in cattle and horses. In cattle, it controls mature and immature roundworms and lungworm and has activity against inhibited Ostertagia larvae. In horses, it controls large and small strongyles, ascarids, and pinworms. This broad-spectrum oral drench requires no mixing, can be administered with standard drenching equipment, and is suitable for use where fenbendazole sensitivity is indicated.