Depending on the active principle and its specific mechanism of action, the drugs used to prevent a woman's natural ovulation in an assisted reproduction treatment are divided into 3 groups:
- GnRh agonists
- Decapeptyl, Procrin and Synarel. Decapeptyl and Procrin are given by injection, and Synarel is a nasal inhaler.
- GnRh antagonists
- are Cetrotide and Orgalutran. Both are administered by subcutaneous injections.