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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 by making vaginal fluid thicker to help prevent sperm from reaching an egg (fertilization) and changing the lining of the uterus (womb) to prevent attachment of a fertilized egg. It also stops the release of an egg (ovulation) in about half of a woman’s menstrual cycles.
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).
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 havestomach 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.
Norethisterone is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store norethisterone in the bathroom or the freezer. There may be different brands of norethisterone that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush norethisterone down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Before taking norethindrone,
There isn’t enough information about the safety of using this medication during pregnancy and breast-feeding. Please always consult with your doctor to weigh the potential benefits and risks before taking this medication.
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.
Stop using this medication and call your doctor at once if you have any of these serious side effects:
Less serious side effects may include:
Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.
Norethisterone may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval, especially before using:
Norethisterone may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.
Norethisterone may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have, especially:
The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this medication.
Usual Adult Dose for Abnormal Uterine Bleeding
2.5 to 10 mg orally per day for 5 to 10 days during the second half of the theoretical menstrual cycle.
Usual Adult Dose for Amenorrhea
2.5 to 10 mg orally per day for 5 to 10 days during the second half of the theoretical menstrual cycle.
Usual Adult Dose for Contraception
0.35 mg orally daily at the same time each day.
Usual Adult Dose for Endometriosis
5 mg orally per day for two weeks. Dosage should be increased by 2.5 mg per day every two weeks until 15 mg per day. This dosage may be continued for six to nine months or until annoying breakthrough bleeding demands temporary termination.
Norethisterone is available in the following dosage forms and strengths:
Tablet, Oral: 0.35 mg.
In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.
If you miss a dose of norethisterone, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.
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