Defendazole contains the same active ingredient (fenbendazole) as the approved brand name drug product, Safe-Guard (NADA 128-620), which was first approved for both cattle and goats in 1994. The FDA ...
Defendazole is the first FDA-approved generic equivalent to Safe-Guard, a brand-name anthelmintic first approved for cattle and goats in 1994. 1 According to the FDA, the generic formulation was ...