The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.
| Level | Code | Title | |
|---|---|---|---|
1
|
G | Genito urinary system and sex hormones | |
2
|
G03 | Sex hormones and modulators of the genital system | |
3
|
G03X | Other sex hormones and modulators of the genital system | |
4
|
G03XB | Antiprogestogens |
| Code | Title | |
|---|---|---|
| G03XB01 | Mifepristone | |
| G03XB02 | ||
| G03XB51 |
| Active Ingredient |
|---|
|
Mifepristone is a synthetic steroid with an antiprogestational action as a result of competition with progesterone at the progesterone receptors. |
|
Ulipristal is an orally-active synthetic selective progesterone receptor modulator which acts via high-affinity binding to the human progesterone receptor. When used for emergency contraception the mechanism of action is inhibition or delay of ovulation via suppression of the luteinising hormone (LH) surge. Pharmacodynamic data show that even when taken immediately before ovulation is scheduled to occur (when LH has already started to rise), ulipristal acetate is able to postpone follicular rupture for at least 5 days. |
| Document | Type | Information Source | |
|---|---|---|---|
| ESMYA Tablet | MPI, EU: SmPC | Medicines & Healthcare Products Regulatory Agency (GB) | |
| MEDABON CO Tablet, Vaginal tablet | MPI, Generic | Health Products Regulatory Authority (ZA) | |
| MIFEGYNE Tablet | MPI, EU: SmPC | Medicines & Healthcare Products Regulatory Agency (GB) |