Plan B can be found behind the pharmacy counter or on the shelf at most grocery and drug stores. Plan B can be obtained without a prescription, and anyone regardless of age or sex can purchase it.
Plan B is commonly referred to as the "morning after pill." It is a type of emergency contraception, used after unprotected sex to help prevent pregnancy from happening. It works in a way that is similar to birth control pills, and should be taken within 72 hours after unprotected sex. It should be noted, however, that this pill is not intended for use as a contraceptive. Also, it does not protect a person from HIV or any other sexually transmitted disease.
The Plan B pill is a progestin-only pill. It works by delaying or inhibiting ovulation. It does not work if the egg has been fertilized. This is what distinguishes the Plan B pill from the abortion pill, formally known as RU-486. Plan B is simply a hormonal emergency contraceptive pill, releasing hormones to prevent the egg from being released from the ovary. RU-486 works by blocking the progesterone hormone. As a result, the lining of the uterus breaks down, which means the pregnancy cannot continue. A second pill is taken after the RU-486 which causes contractions, similar to a miscarriage.