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
|
G03A | Hormonal contraceptives for systemic use | |
4
|
G03AD | Emergency contraceptives | |
5
|
G03AD01 | Levonorgestrel |
| Active Ingredient |
|---|
|
The precise mode of action of levonorgestrel as an emergency contraceptive is not known. At the recommended regimen, levonorgestrel is thought to work mainly by preventing ovulation and fertilisation if intercourse has taken place in the preovulatory phase, when the likelihood of fertilisation is the highest. |
| Document | Type | Information Source | |
|---|---|---|---|
| EMERRES Tablet | MPI, EU: SmPC | Medicines & Healthcare Products Regulatory Agency (GB) | |
| ESCAPELLE Tablet | MPI, Generic | Health Products Regulatory Authority (ZA) | |
| EZINELLE Tablet | MPI, EU: SmPC | Medicines & Healthcare Products Regulatory Agency (GB) | |
| LEVONELLE Tablet | MPI, EU: SmPC | Medicines & Healthcare Products Regulatory Agency (GB) | |
| NORLEVO Tablet | MPI, EU: SmPC | Health Products Regulatory Authority (IE) |
Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.