Aygestin (Norethindrone) Patient Information: Missed a Dose and What Should I Avoid at RxList

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May 25, 2012

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Endometriosis »

What is endometriosis?

Endometriosis is the abnormal growth of cells (endometrial cells) similar to those that form the inside of the uterus, but in a location outside of the uterus. Endometrial cells are cells that are shed each month during menstruation. The cells of endometriosis attach themselves to tissue outside the uterus and are called endometriosis implants. These implants are most commonly found on the ovaries, the Fallopian tubes, outer surfaces of the uterus or intestines, and on the surface lining of the pelvic cavity. They can also be found in the vagina, cervix, and bladder, although less commonly than other locations in the pelvis. Rarely, endometriosis implants can occur outside the pelvis, on the liver, in old surgery scars, and even in or around the lung or brain. Endometrial implants, while they can cause problems, are benign (not cancerous).

Who is affected by endometriosis?

Endometriosis affects w...

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Aygestin Patient Information including If I Miss a Dose

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

Missing a pill increases your risk of becoming pregnant. If you are more than 3 hours late in taking your dose, use back-up birth control such as condoms or a spermicide for at least the next 48 hours.

If you miss a period for two months in a row, call your doctor because you might be pregnant.

What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine. Overdose symptoms may include nausea, vomiting, and vaginal bleeding.

What should I avoid while taking norethindrone?

Do not smoke while using norethindrone, especially if you are older than 35. Smoking can increase your risk of blood clots, stroke, or heart attack caused by norethindrone.

Norethindrone 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.

What other drugs will affect norethindrone?

Some drugs can make norethindrone less effective, which may result in pregnancy. Before using norethindrone, tell your doctor if you are using any of the following drugs:

griseofulvin (Fulvicin, Grisactin);
rifampin (Rifadin, Rifater, Rifamate, Rimactane);
St. John's wort;
ketoconazole (Nizoral) or itraconazole (Sporanox);
a barbiturate such as amobarbital (Amytal), butabarbital (Butisol), mephobarbital (Mebaral), secobarbital (Seconal), or phenobarbital (Luminal, Solfoton); or
HIV medicines such as amprenavir (Agenerase), atazanavir (Reyataz), tipranavir (Aptivus), indinavir (Crixivan), saquinavir (Invirase), lopinavir/ritonavir (Kaletra), fosamprenavir (Lexiva), ritonavir (Norvir), or nelfinavir (Viracept).

There may be other drugs that can interact with norethindrone. 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 norethindrone.

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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