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Norethindrone (Contraceptive)

Pronounced

"nor-ETH-in-drone"

Common brand names:

Micronor

Uses

This medication is used to prevent pregnancy. It is often referred to as the "mini-pill" because it does not contain any estrogen. Norethindrone (a form of progestin) is a hormone that prevents pregnancy.

While the "mini-pill" is more effective than certain other methods of birth control (such as condoms, cervical cap, diaphragm), it is less effective than combination hormone (estrogen and progestin) birth control because it does not consistently prevent ovulation. It is usually used by women who cannot take estrogen. To reduce the risk of pregnancy, it is very important to take this medication exactly as prescribed.

Using this medication does not protect you or your partner against sexually transmitted diseases (such as HIV, gonorrhea, chlamydia).

How to Use This Medication

Read the Patient Information Leaflet provided by your pharmacist before you start using this product and each time you get a refill. The leaflet contains very important information on when to take your pills and what to do if you miss a dose. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth as directed by your doctor, usually once daily. Pick a time of day that is easy for you to remember, and take your pill at the same time each day.

Taking this medication after your evening meal or at bedtime may help if you have stomach upset or nausea with the medication. You may choose to take this medication at another time of day that is easier for you to remember. No matter what dosing schedule you use, it is very important that you take this medication at the same time each day, 24 hours apart.

It is best to begin taking this medication on the first day of your menstrual period. If you begin taking it on any other day, use an additional form of non-hormonal birth control (such as condoms, spermicide) for the first 48 hours to prevent pregnancy until the medication has enough time to work.

Continue taking one tablet every day. After taking the last tablet in a pack, start a new pack the next day. There is no break between packs, and you do not take any "reminder" tablets (tablets without medication). Your periods may be irregular, or heavier/lighter than usual. You may also have vaginal bleeding (spotting) between periods. Do not stop taking your pills if this happens.

Pregnancy is more likely if you miss pills, start a new pack late, or take your pill at a different time of the day than usual. If you miss a pill, or take it 3 or more hours later than usual, or have diarrhea, or vomit soon after taking a pill, use a back-up method of birth control (such as condoms, spermicide) every time you have sex for the next 48 hours.

Ask your doctor or pharmacist about how to switch from other forms of hormonal birth control (such as patch, other birth control pills) to this product. If any information is unclear, consult the Patient Information Leaflet or your doctor or pharmacist.

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RxAnswers™ is a copyrighted combined product from TraceGains and First DataBank, Inc.

Drug information is selected from data included with permission and copyrighted by First DataBank, Inc. This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your healthcare professional. Always seek the advice of your healthcare professional if you have any questions about this product or your medical condition. This information is not intended as individual medical advice and does not substitute for the knowledge and judgment of your healthcare professional. This information does not contain any assurances that this product is safe, effective or appropriate for you.

This information is intended only for residents of the United States. Products sold under the same brand names in other countries may contain different ingredients.

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Information expires December 2022.