Progestin agonist / antagonists block the effects of the hormone progesterone. They're used as emergency contraception, because the prevent ovulation and may also prevent a fertilized egg from implanting in the uterus. Ulipristal (Ella) is one example.
Prices for popular Progestin Agonist/Antagonists medications
ULIPRISTAL can prevent pregnancy. It should be taken as soon as possible in the 5 days (120 hours) after unprotected sex or if you think your contraceptive didn't work. It belongs to a group of medications called emergency contraceptives. It does not prevent HIV or other sexually transmitted infections (STIs).
Disclaimer: Popularity is based on total prescriptions for the brand and generic versions of each drug, regardless of the condition being treated. Some drugs are prescribed for multiple conditions.
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