NorLevo is an emergency birth control pill that you take after unprotected sex to prevent pregnancy.
Take one tablet (1.5 mg levonorgestrel).
Swallow the tablet whole with water. Do not chew it. Take it as soon as possible, ideally within 12 hours, and no later than 72 hours (3 days) after unprotected sex. If you throw up within 3 hours, take another tablet right away.
You should only take one tablet per event of unprotected sex. Do not take NorLevo more than once in the same menstrual cycle.