What is Progesterone USP?
USP stands for United States Pharmacopoeia which is the international standard of purity for substances used in the manufacture of drugs and cosmetics. In the case of progesterone , USP simply confirms that the progesterone is the identical molecule as is produced by the human body. The title progesterone USP, identifies the progesterone as natural and differentiates it from the synthetic versions which are often referred to as progestins or progestogens.