A woman presents 96 hours after unprotected intercourse requesting emergency contraception. She declines an intrauterine device. The oral agent that remains effective at this point is:

• A Ulipristal acetate 30 mg single dose ✓
• B Combined estrogen-progestogen Yuzpe regimen
• C Levonorgestrel 1.5 mg single dose
• D Mifepristone 600 mg single dose

Explanation

Ulipristal acetate, a selective progesterone receptor modulator, retains efficacy up to 120 hours (5 days) after intercourse, whereas levonorgestrel efficacy falls sharply beyond 72 hours. The Yuzpe regimen is also limited to 72 hours and is less effective than either single-agent option. Low-dose mifepristone regimens exist in some programmes but the standard examined answer for the 72 to 120 hour window is ulipristal acetate 30 mg.

Reference: WHO Medical Eligibility Criteria for Contraceptive Use, 5th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.