Hi there, I'm Dr. Sarah, an OB-GYN with over a decade of experience in women’s health. It’s a subject I'm deeply passionate about, especially when it comes to providing accurate and empowering information about reproductive health.

Let's talk about Plan B, also known as the morning-after pill. This is emergency contraception used to prevent pregnancy after unprotected sex or contraceptive failure.

The most important thing to remember about Plan B is that it is most effective the sooner you take it. Here's a breakdown:

* Ideal timeframe: Plan B can be taken immediately after unprotected sex. There's no need to wait until the next day or a certain time. The sooner, the better.
* Effectiveness window: Plan B is highly effective when taken within 72 hours (3 days) after unprotected sex. Studies have shown it can significantly reduce the risk of pregnancy.
* Up to 120 hours: While efficacy decreases, Plan B may still be somewhat effective if taken up to 120 hours (5 days) after unprotected sex. However, it is crucial to understand that its success rate diminishes as time passes.
* Beyond 120 hours: Plan B is not effective if taken more than 120 hours after unprotected sex. Other emergency contraceptive options, like a copper IUD, might be more appropriate, and a healthcare provider can help determine the best course of action.

Why is timing so critical with Plan B?

Plan B contains a synthetic hormone called levonorgestrel, a progestin. It primarily works by delaying or preventing ovulation (the release of an egg from the ovary). If ovulation has already occurred, Plan B is less likely to be effective.

Important Considerations:

* Availability: Plan B is available over the counter at most pharmacies. You do not need a prescription or ID to purchase it.
* Side Effects: Some women may experience side effects such as nausea, breast tenderness, headache, or changes in their menstrual cycle. These effects are typically mild and temporary.
* Not an Abortion Pill: Plan B is not an abortion pill. It will not terminate an existing pregnancy and is ineffective if you are already pregnant.
* Not Regular Contraception: Plan B should not be used as a regular form of contraception. It's essential to have reliable, ongoing birth control if you are sexually active and do not wish to become pregnant.

Remember: If you have any questions or concerns, please reach out to a healthcare professional. They can provide personalized guidance and address any specific concerns you may have.

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Both Plan B pills can be taken at the same time with no decrease in effectiveness or increase in side effects. Plan B should be taken within 5 days (120 hours) of unprotected sex and can reduce the risk of pregnancy up to 89%. But it is more effective the sooner you take it.read more >>