| Active substance |
Norethisterone |
| Also known as |
Norethindrone (USAN) |
| Blood pressure |
Can cause increased blood pressure in susceptible individuals |
| Chemical name |
17-Hydroxy-19-nor-17О±-pregn-4-en-20-yn-3-one |
| Dosage (medical) |
Typically 5 mg daily for various conditions, but can vary based on specific treatment needs |
| Dosage (sports) |
Not typically used for performance enhancement purposes |
| Effects |
Induces secretory changes in the endometrium, suppresses ovulation, and modifies cervical mucus |
| Formula |
C20H26O2 |
| Half-life |
Approximately 8 hours |
| Hepatotoxicity |
Low risk at therapeutic doses |
| Lab Test |
Plasma levels can be measured by specific assays |
| Main action |
Progestogenic activity |
| Side effects |
Menstrual irregularities, nausea, breast tenderness, headache, mood changes |
| Storage conditions |
Store at room temperature away from moisture and heat |
| Strength |
5mg |
| Substance class |
Synthetic progestogen |
| Trade name |
Primolut N, Aygestin, others |
| Use in sports |
Not commonly used in sports due to its hormonal effects |
| Water Retention |
Minor to moderate |
| Manufacturer |
Cipla Ltd. |
| Packing |
10 tabs/blister |
