<unk>  is a inhibitor of endogenous adrenal corticosteriod synthesis that is FDA approved for the diagnosis of adrenal insufficiency and testing hypothalamic‑pituitary ACTH function.   Common adverse reactions include acute adrenal insufficiency in patients with reduced adrenal secretory capacity.
Metyrapone
Cadexomer iodine
Aminoglutethimide
Progabide
Dexetimide
Acipimox
Sermorelin
Enoximone