Plan B, also known as the morning-after pill, is an emergency contraceptive that can be taken to prevent pregnancy after unprotected sex or contraceptive failure. It contains a high dose of levonorgestrel, a synthetic hormone that works by preventing ovulation or fertilization of an egg. It is not an abortion pill and will not terminate an existing pregnancy.

Plan B is most effective when taken as soon as possible after unprotected sex, but can be taken up to 72 hours afterward. The sooner it is taken, the more effective it is at preventing pregnancy. It is important to note that Plan B is not intended for regular use as a form of contraception and should only be used in emergency situations.

Common side effects of Plan B may include nausea, abdominal pain, fatigue, headache, and changes in menstrual bleeding. These side effects are usually mild and temporary. If you experience severe abdominal pain, dizziness, or vomiting after taking Plan B, it is important to seek medical attention.

It is important to talk to your healthcare provider before taking Plan B, especially if you have any underlying medical conditions or are taking other medications. They can provide guidance on the appropriate use of emergency contraception and help you explore other contraceptive options for future use.

In conclusion, Plan B is a safe and effective emergency contraceptive that can help prevent pregnancy after unprotected sex. It is important to use it responsibly and in consultation with a healthcare provider. Remember, emergency contraception is not a substitute for regular contraception and should only be used in emergency situations.