Plan B (Levonorgestrel) Patient Information: Side Effects and Drug Images at RxList

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May 27, 2012

Plan B

Birth Control (Types and Options) »

Introduction to birth control types and options

If a woman is sexually active and she is fertile — physically able to become pregnant — she needs to ask herself, "Do I want to become pregnant now?" If her answer is "No," she must use some method of birth control (contraception).

If a woman does not want to get pregnant at this point in her life, does she plan to become pregnant in the future? Soon? Much later? Never? Her answers to these questions can determine the method of birth control that she and her male sexual partner use — now and in the future.

There are a number of different ways to describe birth control. Terms include contraception, pregnancy prevention, fertility control, and family planning. But no matter what the process is called, sexually active people can choose from a plethora of methods to reduce the possibility of their becoming pregnant. Nevertheless, no method of birth control av...

Read the Birth Control (Types and Options) article »

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Plan B

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Plan B Patient Information Including Side Effects

Brand Names: Next Choice, Plan B, Plan B One-Step

Generic Name: levonorgestrel emergency contraceptive (Pronunciation: LEE voe nor jes trel)

What is levonorgestrel emergency contraceptive (Plan B)?

Levonorgestrel is a female hormone that prevents ovulation (the release of an egg from an ovary). This medication also causes changes in your cervical mucus and uterine lining, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus.

Levonorgestrel emergency contraceptive is used to prevent pregnancy after unprotected sex or failure of other forms of birth control (such as condom breakage, or missing 2 or more birth control pills).

Levonorgestrel emergency contraceptive may also be used for other purposes not listed in this medication guide.

What are the possible side effects of levonorgestrel emergency contraceptive (Plan B)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have severe pain in your lower stomach or side. This could be a sign of a tubal pregnancy (a pregnancy that implants in the fallopian tube instead of the uterus). A tubal pregnancy is a medical emergency.

Less serious side effects may include:

nausea, diarrhea, or stomach pain;
dizziness, tired feeling;
breast pain or tenderness;
changes in your menstrual periods; or
headache.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about levonorgestrel emergency contraceptive (Plan B)?

Do not use this medication if you are already pregnant. Levonorgestrel emergency contraceptive will not terminate a pregnancy that has already begun (the fertilized egg has attached to the uterus).

Levonorgestrel emergency contraceptive is not intended for use as a routine form of birth control and should not be used in this manner. Talk with your doctor about the many forms of birth control available.

Do not give this medication to anyone younger than 17 years old. Contact a doctor for medical advice.

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