Valbazen (albendazole), is a benzimidazole anthelmintic that is used extra-label (off-label) in poultry, waterfowl, and game birds. Albendazole is one of the more effective dewormers at killing most species of worms that infect poultry, waterfowl, and game birds. It is effective against roundworms, capillary worms, cecal worms, gizzard worms, gapeworms, and possibly some species of tapeworms. This article explains how to give liquid medications orally.