| Active substance |
Levonorgestrel |
| Also known as |
LNG |
| Blood pressure |
Can cause slight increase in some users |
| Chemical name |
(17О±)-13-Ethyl-17-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one |
| Dosage (medical) |
Varies by form - 1.5 mg single dose for emergency contraception, smaller doses in combined oral contraceptives |
| Dosage (sports) |
Not applicable |
| Effects |
Prevents ovulation, thickens cervical mucus, thins the endometrium |
| Formula |
C21H28O2 |
| Half-life |
24 to 32 hours |
| Hepatotoxicity |
Low risk |
| Lab Test |
Hormone levels measurement |
| Main action |
Contraceptive hormone |
| Side effects |
Weight gain, headaches, mood changes, breast tenderness, menstrual irregularities |
| Storage conditions |
Store at room temperature away from moisture and heat |
| Strength |
1.5mg |
| Substance class |
Synthetic progestogen |
| Trade name |
Plan B, Mirena, Skyla, among others |
| Use in sports |
Not commonly used in sports contexts |
| Water Retention |
Minimal |
| Manufacturer |
Nicholas Piramal |
| Packing |
1 tab/blister |
