Version July 2025
| Generation | Steroidal (type 1) | Nonsteroidal (type 2) |
| First (nonselective) | - | Aminoglutethimide |
| Second (selective) | Formestane | Fadrozole |
| Third (superselective) | Exemestane (Aromasin) | Anastrozole (Arimidex) |
| Letrozole (Femara) |
