Emergency contraception using levonorgestrel 1.5 mg (single dose) is effective when taken within:

• A 24 hours of unprotected intercourse
• B 120 hours of unprotected intercourse
• C 48 hours only
• D 72 hours of unprotected intercourse ✓

Explanation

Levonorgestrel 1.5 mg as emergency contraception is effective up to 72 hours (3 days) after unprotected intercourse, with efficacy declining with time: ≈95% if taken within 24 hours, ≈85% at 48 hours, ≈58% at 72 hours. Ulipristal acetate 30 mg (ella) is effective up to 120 hours. The copper IUD can be used as emergency contraception up to 120 hours.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.