Plan B (Levonorgestrel) Patient Information: Missed a Dose and What Should I Avoid at RxList

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May 27, 2012

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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 Patient Information including If I Miss a Dose

What happens if I miss a dose (Plan B)?

Missing a dose of this medication increases your risk of being pregnant.

Contact your doctor if you miss a dose of levonorgestrel emergency contraceptive. The timing of these doses is very important for this medication to be effective.

What happens if I overdose (Plan B)?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include nausea and vomiting.

What should I avoid while taking levonorgestrel emergency contraceptive (Plan B)?

Levonorgestrel emergency contraceptive will not protect you from sexually transmitted diseases--including HIV and AIDS. Using a condom is the only way to protect yourself from these diseases. Avoid having unprotected sex.

What other drugs will affect levonorgestrel emergency contraceptive (Plan B)?

Before using this medication, tell your doctor if you are using any of the following drugs:

rifampin (Rifadin, Rifater, Rifamate, Rimactane);
a barbiturate such as amobarbital (Amytal), butabarbital (Butisol), mephobarbital (Mebaral), secobarbital (Seconal), or phenobarbital (Luminal, Solfoton); or
seizure medicines such as phenytoin (Dilantin), or carbamazepine (Tegretol).

This list is not complete and there may be other drugs that can affect levonorgestrel emergency contraceptive. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about levonorgestrel emergency contraceptive.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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