Medicines
Discover all available medicines and treatments
Discover all available medicines and treatments
Brand: Plan B One-Step, Next Choice One Dose, Mirena, Skyla, Liletta, Kyleena
Levonorgestrel is a synthetic progestogen used in various hormonal contraceptives. It belongs to the gonane family of steroids and acts primarily by preventing ovulation. It thickens cervical mucus, making it difficult for sperm to reach an egg, and thins the uterine lining, hindering implantation of a fertilized egg. Levonorgestrel is available in different formulations, including pills, intrauterine devices (IUDs), and implants.
Used for emergency contraception, hormonal birth control, and treatment of certain menstrual disorders.
Outcome:
Reduced contraceptive effectiveness
Mechanism:
Induction of hepatic enzymes
Outcome:
May slightly reduce effectiveness
Mechanism:
Unknown
Outcome:
No significant interaction
Mechanism:
None known
Most likely new formulation: Long-acting injectable or biodegradable implant (2026, 60% confidence)
Based on current usage trends and ongoing research, there is a 70% likelihood of new levonorgestrel formulations being approved within the next 5 years.
Progestin, Contraceptive
Gonane