Yes, our progesterone is micronized progesterone, like Prometrium, and it's bioidentical. Related ArticlesDo I need to take both estrogen and progesterone?I take progesterone birth control pills. Do I need progesterone through Winona?What is the best hormone therapy for menopause?How do Winona treatments compare to bioidentical pellet therapy?How is Winona different from the creams I can get on Amazon or at other stores?