Take 1 tablet by mouth with or without food as soon as possible after unprotected sex. This medication works best when it is taken within 72 hours (3 days) after unprotected sex. If you vomit within 2 hours of taking this medication, contact your doctor to ask if you need to repeat the dose.

How should you take NORLEVO® Morning After Pill? NORLEVO® is most effective if taken as soon as possible after unprotected intercourse and no later than 72 hours (3 days) afterwards. Each pack of NORLEVO® contains two tablets.

Take as directed, usually 2 tablets at once; or take 1 tablet and then take the second tablet 12 hours after the first tablet. This medication may be taken with or without food. This medication works best when it is taken within 72 hours (3 days) after unprotected sex.

Levonorgestrel 1.5 mg tablets for emergency contraception works best when you take it as soon as possible after unprotected sex. It is effective within 72 hours (3 days) of unprotected sex.

You may need to take another dose of this medication. Because you can become pregnant soon after treatment with levonorgestrel, you should continue using your regular method of birth control or begin using regular birth control immediately.

You can buy levonorgestrel morning-after pills over the counter without a prescription in most drugstores, pharmacies, and superstores. These types of morning-after pills work best when you take them within 72 hours (3 days) after unprotected sex, but you can take them up to five days after.

Couples who do have sex need to use birth control properly and every time to prevent pregnancy. For example, the birth control pill can be effective in preventing pregnancy. But if a girl forgets to take her pills, this isn’t an effective method for her. Condoms can be an effective form of birth control, too.

The elimination half-life of levonorgestrel is 24 to 32 hours, although values as short as 8 hours and as great as 45 hours have been reported. About 20 to 67% of a single oral dose of levonorgestrel is eliminated in urine and 21 to 34% in feces.

If you take the pill within 72 hours after you’ve had unprotected sex, levonorgestrel can reduce the risk of pregnancy by up to 87% if taken as directed. If you take Plan B One-Step within 24 hours, it is much more effective. But you should know that Plan B One-Step is not as effective as regular contraception.

Taking the morning-after pill — emergency contraception — more than five days after unprotected vaginal intercourse won’t have any effect. Emergency contraception — the morning-after pill — is effective if started within 120 hours, or five days. The sooner emergency contraception is started, the better it works.

Both pills can be taken at the same time or as 2 separate doses 12 hours apart. Either may be taken for up to 5 days after unprotected intercourse.

No. Using emergency contraception (EC), also known as the morning-after pill, more than once does not affect a woman’s fertility — and it will not prevent her from becoming pregnant in the future. Women should feel free to use EC whenever they think it’s necessary.

The effectiveness is maximum within 24 hours of intercourse. As a high dose of hormone is taken, it disrupts the normal menstrual cycle and the woman may bleed irregularly or have delayed menses in the next cycle. The pill can cause nausea, vomiting, breast discomfort and pain in some users.