Progesterone is a steroid hormone synthesized naturally in our body and also could be made and taken synthetically. Watch this video to learn the pharmacology of progestins and anti-progestin therapy. Timeline: 0:00 Introduction 0:30 Progesterone 0:50 Mode of Action 1:15 Actions 2:54 Uses 5:07 Adverse Effects 5:30 Progesterone Preparations 6:32 Anti Progestins 7:04 Uses of Anti Progestins 7:15 Adverse effects of Anti Progestins