This natural glandular extract contains the outer cortex of a bovine adrenal gland which is rich in substrates necessary to support human adrenal function. It supports healthy adrenal gland function.† Our extracts are sourced from countries recognized as Bovine Spongiform Encephalopathy-Free (or BSE-Free). Each batch is lyophilized (freeze-dried) to preserve biological activity and is tested to ensure purity and safety.