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

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May 27, 2012

Ortho Micronor

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What are birth control pills and how do they work?

Birth control pills are also known as oral contraceptives (OCs) or, simply, â€œthe pill.â€ They offer protection against pregnancy by blocking the union of sperm and egg, thereby preventing conception.

Oral contraceptives or birth control pills contain synthetic female hormones. They work largely by preventing the release of an egg from an ovary, or ovulation. If no egg is released, there can be no pregnancy.

Stopping ovulation is not the only way birth control pills can work. The progestin or synthetic progesterone in birth control pills also changes the physical and chemical environment of the female reproductive tract, making it hostile for sperm.

What are the different types of birth control pills?

The active ingredients in birth control pills are synthetic versions of the female hormones estrogen and progesterone. Combination oral contraceptives are birth control...

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Ortho Micronor 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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