How should I take levonorgestrel emergency contraceptive?
Use this medication exactly as directed on the label, or as it has been prescribed by your doctor. Do not use the medication in larger amounts or for longer than recommended. The first dose of levonorgestrel emergency contraceptive must be taken as soon as possible after unprotected sex (no later than 72 hours afterward). The second dose must be taken 12 hours after the first dose. The timing of these doses is very important for this medication to be effective. Call your doctor right away if you vomit within 1 hour after taking either dose of levonorgestrel emergency contraceptive. Do not take another dose until you talk with your doctor.