Classification of estrogens and progestogens
| Drug | Classification by structure | Example | |
|---|---|---|---|
| Estrogens | Natural estrogen | Estradiol valerate; estradiol (E2) | |
| Synthetic estrogen | Nylestriol; ethinylestradiol | ||
| Progestogens | Natural progestogen | Progesterone (P4) | |
| Progestins | Retroprogesterone | Dydrogesterone | |
| 17-OH progesterone derivatives (pregnanes) | Medroxyprogesterone acetate (MPA); megestrol acetate; chlormadinone acetate | ||
| 17-OH norprogesterone derivatives (norpregnanes) | Gestonorone caproate; nomegestrol acetate | ||
| 19-nortestosterone derivatives (estranes) | Norethindrone (NET); norethindrone acetate; lynestrenol; ethinodiol acetate | ||
| 19-nortestosterone derivatives (gonanes) | Norgestrel; levonorgestrel; desogestrel; etenogestrel | ||
| 19-norprogesterone derivatives (norpregnanes) | Demegestone; promegestone; nesterone; trimegestone | ||
| Spironolactone derivative | Drospirenone | ||
According to reference5–7.