how long is plan b effective
It takes about 17 hours for the levonorgestrel in Plan B to reach peak levels in your blood. Ad Free 2-day Shipping On Millions of Items. Emergency Contraceptives National Center For Health Research Need To Find A Store. . Plan B is most effective if taken within 72 hours. Plan B is most effective when taken within 72 hours and works to prevent pregnancy by delaying ovulation. Ad Take Within 72 Hours Of Unprotected Sex. If you take it within 24 hours of. If your period is more than a. Its best to take Plan B as soon as possible since it works best within the first three days. Plan B Is Available Over The Counter All Major Retailers. Plan B is most effective if taken within. After this it will delay ovulation for a few days. Generic PLAN B is FDA Approved and Available for Order Online. Because plan B is most effective when taken as soon as possible after. If you have taken it anticipate an irregular period afterwards. ...