The morning-after pill, or Plan B, is a form of emergency contraception meant to be taken within 72 hours of having unprotected intercourse. It helps prevent pregnancy by stopping ovulation and is about 89 percent effective. The morning-after pill will not terminate an existing pregnancy and is not as effective as birth control pills or condoms as a contraception method. It also does not protect against sexually transmitted diseases.
In 2009, the U.S. Food and Drug Administration allowed Plan B to be sold to 17-year-olds without a prescription, and sales have skyrocketed.
"Some people believe that it will lead, especially teenagers, to be more promiscuous," ER physician Dr. Travis Stork says, "because [they may say], 'Hey, I'll just go take a pill tomorrow and I won't get pregnant.'"
"It goes back to the fact that we have to educate our kids," OB-GYN Dr. Lisa Masterson says. "The morning-after pill is not contraception. It is emergency contraception."
Learn more about birth control options.