Norethindrone

Norethindrone is a synthetic progestin, a laboratory-made version of the hormone progesterone. One name covers several very different prescription tablets: a low dose progestin-only birth control pill, higher dose norethindrone acetate tablets used for gynecologic conditions, and combination products that pair the progestin with an estrogen. Knowing which version you were prescribed changes nearly everything else on this page.

All of these are prescription-only products in the United States. This guide explains what each form is approved to do, what the labels warn about, how the pills differ from one another, and what actually moves the monthly cost when you pay cash. It is a reference page, not a treatment plan.

How norethindrone works in the body

Progestins talk to the same receptors that natural progesterone does. That produces three effects that matter for contraception and for bleeding problems.

• Cervical mucus thickens, so sperm have a harder time reaching an egg.
• The lining of the uterus (the endometrium) stays thin, which reduces bleeding and makes implantation less likely.
• The hormone signal that triggers ovulation can be blunted, so an egg may not be released.

How strongly each effect shows up depends on the dose and on whether an estrogen is included. With the 0.35 mg progestin-only pill, ovulation is suppressed in some cycles but not reliably in all of them, so the mucus and lining effects do much of the work. That is why timing is strict: the labeling directs users to take the pill at the same time daily and to use backup contraception if a dose is more than three hours late, as described in the official DailyMed listing for norethindrone tablets.

Higher dose norethindrone acetate suppresses the uterine lining more aggressively, which is why it is used for bleeding and pain conditions rather than as a daily contraceptive on its own. When an estrogen such as ethinyl estradiol is added, ovulation is blocked more consistently and cycles become more predictable. The tradeoff is that estrogen brings its own set of risks, covered further down.

The four products people call the same thing

Before reading about side effects, find your product in this table. A prescription for one form is not interchangeable with another.

What norethindrone is approved to treat

Preventing pregnancy

The progestin-only pill is labeled for pregnancy prevention in people who choose an oral contraceptive. Combination tablets that pair norethindrone acetate with ethinyl estradiol carry the same core indication. Labeling for combination pills includes a table of typical first-year failure rates alongside other methods, and it is blunt about the reason for the range: these methods work as well as they are used. Consistency, not brand, drives real-world effectiveness. Neither product protects against HIV or other sexually transmitted infections.

Endometriosis, heavy bleeding and absent periods

Higher dose norethindrone acetate is labeled for endometriosis, for abnormal uterine bleeding when no organic cause is found, and for secondary amenorrhea, meaning periods that have stopped after having been regular. Labeling describes daily dosing in a range rather than a single fixed amount, and courses for endometriosis are usually measured in months. Your prescriber sets the strength and length; ask for the plan in writing. Background on the condition itself is available in the ACOG patient explainer on endometriosis.

Menopause symptom relief

Tablets combining estradiol with norethindrone acetate are a different category again. They are used for hot flashes and other menopause symptoms, and some are also indicated to help prevent osteoporosis after menopause. The progestin is there to protect the uterine lining from unopposed estrogen. These products carry their own boxed warnings covering endometrial cancer, cardiovascular risks, breast cancer and probable dementia. A patient-level summary sits in this Cleveland Clinic overview of estradiol and norethindrone tablets.

Delaying a period is not a labeled use in the US

Search interest in using this progestin to push a period past a wedding, a race or a holiday is high, and some telehealth programs offer it. In the United States, delaying a period is not a listed indication on the label. That makes it an off-label use, which is legal for a clinician to prescribe but means the evidence and risk discussion belong to your prescriber rather than to an approved labeling section. Ask directly whether the request is being handled off-label, and what the fallback is if bleeding starts anyway.

Will you still get a period?

Bleeding patterns change for most users, and unpredictability is the norm rather than a sign of failure. Some people bleed on schedule, some spot between periods, and some stop bleeding altogether while taking the progestin-only pill. Labeling and patient guidance both describe this range. If your periods stop and you have missed pills or taken them late, a pregnancy test is a reasonable step. Bleeding that is heavy, prolonged or new after a settled pattern deserves a clinical look, as noted in the ACOG guidance on progestin-only birth control.

Side effects, from routine to serious

Most reported effects are hormonal nuisances rather than emergencies, and many settle over the first few cycles. Commonly listed ones include irregular bleeding or spotting, headache, breast tenderness, nausea, bloating, acne, mood changes, reduced sex drive and ovarian cysts. Patient-facing summaries of these appear in the MedlinePlus drug information page for this progestin and in Mayo Clinic’s oral route description.

Serious effects are far less common but are the reason the labeling is long. For products containing an estrogen, labeling flags increased risk of heart attack, blood clots in the legs or lungs, stroke, liver tumors and gallbladder disease. The label is equally clear that the absolute risk of serious harm stays very small in healthy users without other risk factors, and that risk rises sharply alongside high blood pressure, high blood lipids, obesity and diabetes. Facts first, then caveats: for most healthy non-smokers, the common problems are bleeding changes and headaches, not clots.

Does it cause weight gain?

This is the single most asked question about hormonal birth control, and the honest answer is that studies have not shown a clear causal link between combined hormonal pills and lasting weight gain. Fluid retention, appetite changes and breast fullness are reported and can read as weight on a scale. Evidence for progestin-only pills is thinner, so certainty is lower. If your weight moves sharply after starting, that is worth raising rather than absorbing. General expectations are set out in ACOG’s overview of combined hormonal contraception.

What long-term use looks like

Fertility generally returns quickly after stopping oral contraceptives, which is a common worry with long courses. The cancer picture is mixed rather than one-directional: research links combined oral contraceptive use with lower rates of ovarian and endometrial cancer and with small increases in breast and cervical cancer risk that appear to fade after stopping. The National Cancer Institute maintains a plain summary of oral contraceptives and cancer risk. Long-term users still need routine blood pressure checks and normal cancer screening.

The smoking warning, and who should not take these pills

Combination products that include norethindrone acetate and ethinyl estradiol carry a boxed warning, the strongest warning the FDA applies. Cigarette smoking raises the risk of serious cardiovascular events in people using combined oral contraceptives. That risk climbs with age and with the number of cigarettes. Because of it, combined pills are contraindicated in women over 35 who smoke. This is not a soft caution; it is a do-not-use line in the labeling.

Other situations where combined pills are contraindicated or need specialist input include a history of blood clots, known clotting disorders, coronary or cerebrovascular disease, uncontrolled high blood pressure, migraine with aura, current or past breast cancer, active liver disease or liver tumors, and known or suspected pregnancy. Progestin-only pills avoid the estrogen-driven clot risk and are often an option when estrogen is not, but they carry their own contraindications, including current breast cancer, undiagnosed abnormal genital bleeding and acute liver disease.

Blood pressure matters enough that a recent reading should exist before a combined pill is started or renewed. Clinician-facing eligibility guidance by condition is published in the CDC US Medical Eligibility Criteria for contraceptive use. It is written for prescribers, but it shows how carefully each condition is weighed, and it is a fair benchmark for what a good intake form should be asking you.

Drug interactions worth raising before you start

Hormones in these tablets are broken down by liver enzymes, so medicines that speed those enzymes up can lower hormone levels and reduce contraceptive protection. Categories to disclose include:

• Rifampin and related rifamycin antibiotics used for tuberculosis.
• Several seizure medicines, including carbamazepine, phenytoin, phenobarbital, primidone and topiramate at higher doses.
• Some HIV and hepatitis C regimens; certain hepatitis C combinations are specifically contraindicated with ethinyl estradiol because of liver enzyme elevations.
• St John’s wort, an over-the-counter herbal product that is a genuine enzyme inducer.
• Bosentan and griseofulvin.

Traffic runs the other way too. Estrogen-containing pills can lower lamotrigine levels, which matters for seizure control, and they can shift thyroid and other lab results without any underlying disease. Ordinary antibiotics such as amoxicillin or doxycycline have not been shown to reduce oral contraceptive effectiveness, despite the persistent rumor; the rifamycins are the recognized exception. Bring a full list including supplements to any telehealth intake, since the reviewer only sees what you type.

Forms, strengths, brand names and generics

The progestin-only pill is dispensed as 0.35 mg tablets in 28-day packs with no hormone-free week, which is why there is no built-in break. It has been marketed under many names over the years, most of them generic labels rather than a single dominant brand. Higher dose norethindrone acetate was long sold as Aygestin and is now widely available generically. Combined pills that pair norethindrone acetate with ethinyl estradiol appear under a long list of names, including the product family whose current labeling backs much of this page.

Brand versus generic is mostly a packaging and price question here. Generic tablets must show the same active ingredient, strength and bioequivalence to be approved, a standard explained in the FDA’s overview of generic drug standards. Inactive ingredients and pill appearance can differ, and switching manufacturers mid-pack can be confusing even when the medicine is equivalent.

One distinction is worth repeating: norethindrone 0.35 mg and norethindrone acetate are not the same prescription. The acetate is a different salt used at higher strengths for different indications. If a pharmacy hands you a pill that looks nothing like your last pack, confirm the name and strength before starting it. Note also that the first nonprescription daily oral contraceptive cleared in the US uses a different progestin, norgestrel, as described in the FDA announcement of that approval. This molecule still requires a prescription.

What norethindrone costs without insurance

Cash pricing here has two layers, and mixing them up is where budgets go wrong. There is the tablet itself, an old and heavily genericized product, and there is the program around it: the visit, the prescription, refills and shipping. Some telehealth programs quote one monthly figure that bundles everything. Others charge a separate consult or membership fee and let a pharmacy bill you for the pills. A low medication price with a recurring platform fee on top is not the same offer as an all-in monthly rate.

Rather than freeze a figure in prose that goes stale, here are the live numbers from the tracked directory, on a cash pay basis, per month.

Lowest tracked self-pay price: . Median across tracked programs: .

Beyond the headline, the things that actually move your cost are supply length (a three-month or twelve-month pack usually lowers the per-month figure), whether shipping is included, whether the program sends the script to a local pharmacy instead of mailing it, and whether renewals cost the same as the first month. Advertised self-pay prices change often, so treat any figure as a snapshot.

Monthly numbers hide the real total, so it helps to see a year at once.

If you also have a plan and want to see which route is cheaper on paper, compare them side by side. Remember the site convention: insurance-route figures cover the plan or membership fee only, and exclude copays and deductibles, which vary by plan and by state.

On coverage, federal rules require most ACA-compliant plans to cover FDA-approved contraceptive methods with no cost sharing, but which specific product sits at zero dollars depends on the plan’s formulary, and exceptions exist for some employer plans. The government summary is the HealthCare.gov page on birth control benefits. Nothing on this page can promise coverage; call the number on your card and ask about the exact product name and strength. Other calculators for cost and health tracking sit on the Free Health Calculators page, and you can preview the cost breakdown format in the Sample Savings Report.

How telehealth programs handle this prescription differently

Contraception is one of the oldest telehealth categories, and the programs are not interchangeable. The medicine may be identical while the service around it is not. When comparing, look at these dimensions rather than at the marketing.

1. States served. Prescribing is governed by state licensure, so a program that works for a friend may not operate where you live.
2. Which pills they will write. Some programs offer combined pills, progestin-only pills, patches and rings; others stick to a narrow list.
3. Blood pressure and history checks. A serious intake asks for a recent reading before a combined pill and screens for clot history, migraine with aura and smoking status.
4. Visit type. Asynchronous questionnaires are fast; a live video or phone option matters more if your history is complicated.
5. Fulfillment. Mail order with auto-refill versus sending the script to your own pharmacy changes both convenience and price.
6. Follow-up. Ask how side effect messages are answered, how a switch to a different pill is handled, and what happens at annual renewal.
7. Cancellation. Whether you can stop a subscription without calling, and whether unused shipments are refundable.

You can browse programs and patient reviews in the Telehealth Provider Directory, and the scoring approach behind those pages is documented in the Scoring Methodology Notes. For neighboring molecules and hormone therapies, the Medication Reference Index is the fastest way in, and ongoing coverage of pricing and access sits in our Latest Telehealth Analysis.

Questions to ask, and the symptoms that mean stop and call

Bring a short list to the visit. Useful questions include: which exact product and strength am I getting, and is it the acetate or the 0.35 mg tablet? Is this being prescribed for a labeled use or off-label? Given my blood pressure, migraine history and smoking status, is an estrogen safe for me? What bleeding pattern should I expect in the first three months, and at what point is it worth changing? What do I do about a late or missed dose? Which of my current medicines or supplements could interact? How do refills and renewals work if I travel?

Some symptoms need prompt attention rather than a message thread. Seek urgent care for sudden chest pain or shortness of breath, coughing up blood, severe or one-sided leg pain and swelling, sudden severe headache unlike your usual ones, weakness or numbness on one side, trouble speaking, sudden vision loss or changes, severe abdominal pain, or yellowing of the skin or eyes. These map to the clot, stroke, liver and gallbladder risks named in the labeling, and they are worth memorizing rather than filing away.

Where these facts come from

• Office on Women’s Health overview of birth control methods
• KFF policy research on contraceptive coverage and costs

Educational content, no