Estrogen, progesterone, patch or pill:
understanding your hormone therapy options.

Hormone therapy is built around estrogen, because estrogen is what relieves hot flashes, night sweats, and the other symptoms that bring most women to the conversation. The second hormone exists for a different reason. If you have a uterus, estrogen on its own causes the uterine lining to build up, and over time that raises the risk of precancerous changes and endometrial cancer. A progestogen, the general term for progesterone and the synthetic progestins, keeps the lining thin and cancels out that risk. This is why the standard regimen for a woman with a uterus is estrogen plus a progestogen, and why a woman who has had a hysterectomy can usually take estrogen alone. It is also why, when the FDA removed most boxed warnings from hormone therapy labels in 2025 and 2026, it kept the endometrial cancer warning on systemic estrogen-alone products.

There is more than one way to supply the progestogen. Micronized progesterone is an FDA-approved capsule that is chemically identical to the progesterone the body makes, usually taken at bedtime because it can cause drowsiness. Synthetic progestins such as medroxyprogesterone acetate and norethindrone are also FDA-approved, alone or combined with estrogen in a single pill or patch. Some clinicians use a levonorgestrel IUD to protect the lining, an off-label use that The Menopause Society notes can also provide contraception for women starting therapy before their final period, though clinical trial data for it are limited. And one product pairs conjugated estrogens with bazedoxifene, a medication that protects the lining without a progestogen at all.

The progestogen can be taken every day (continuous) or for about 12 to 14 days each month (cyclic). Continuous dosing usually leads to no bleeding once the body adjusts, and it is the typical choice after menopause. Cyclic dosing produces a predictable monthly bleed and is often used for women who are still in perimenopause. Either way, the question "do I need progesterone?" has a clear answer: with a uterus and systemic estrogen, yes. Low-dose vaginal estrogen is the exception, because so little is absorbed that a progestogen is not required; our guide to vaginal estrogen safety explains why.

Sources: The Menopause Society, 2022 Hormone Therapy Position Statement · ACOG, Hormone Therapy for Menopause

Estrogen taken as a pill is absorbed through the gut and passes through the liver first. That first pass changes how the liver behaves: it raises production of clotting factors, triglycerides, and certain binding proteins. Estrogen absorbed through the skin from a patch, gel, or spray enters the bloodstream directly and skips that step. In observational studies, transdermal estrogen has been associated with a lower risk of blood clots, and possibly of stroke, than oral estrogen. ACOG and The Menopause Society both note this, while pointing out that the evidence comes from observational data rather than head-to-head randomized trials.

So is a patch safer than a pill? For a woman with risk factors for blood clots, such as obesity, a prior clot, or a clotting disorder, or with high triglycerides or gallbladder disease, a transdermal route is often preferred for exactly these reasons. For a healthy woman under 60 who is within 10 years of menopause, the absolute risk of a clot on either route is low, and oral estrogen remains an effective, well-studied option. In that situation the choice is frequently practical: a patch is changed once or twice a week, a gel or spray is applied daily, a pill is taken daily, and skin irritation, cost, insurance coverage, and simple preference all count. Either route is prescribed at the lowest dose that controls symptoms, and the dose can be adjusted over time.

One more distinction deserves a sentence. Pills, patches, gels, and sprays are all systemic, meaning they raise estrogen levels throughout the body. Vaginal creams, tablets, inserts, and rings are local: they treat dryness, painful sex, and urinary symptoms where those symptoms live, with very little entering the bloodstream. Women who take systemic therapy for hot flashes sometimes still need a local product for vaginal symptoms, and women whose only symptoms are vaginal or urinary are usually better served by local treatment alone.

Sources: ACOG Committee Opinion No. 556, Route of Administration and Risk of Venous Thromboembolism · The Menopause Society, 2022 Hormone Therapy Position Statement

"Bioidentical" simply means a hormone that is chemically identical to the one the body produces. Estradiol and micronized progesterone are bioidentical, and both are available as FDA-approved products: estradiol patches, gels, sprays, pills, and vaginal preparations, and progesterone capsules. These products are manufactured to consistent strengths, tested for safety and effectiveness in clinical trials, and tracked for side effects after approval. When a clinician prescribes an estradiol patch with progesterone capsules, that is bioidentical hormone therapy, and it is fully FDA-approved.

Compounded bioidentical hormones are different. They are mixed to order by a compounding pharmacy, often as creams, troches, or implanted pellets, and often promoted as more "natural" or safer than approved products. They are not FDA-approved, their strength and absorption can vary from batch to batch, and they have not been tested for safety or effectiveness the way approved products have. In 2020 the National Academies of Sciences, Engineering, and Medicine reviewed the evidence and concluded there was not enough to support the clinical utility of compounded hormone therapy, recommending its use be restricted to situations where an approved product cannot be used, such as a documented allergy to an ingredient. The Menopause Society and ACOG recommend FDA-approved hormone therapy, and advise against compounded products except in those limited circumstances.

Pellet therapy gets its own caution. Pellets implanted under the skin release hormones for months at a dose that cannot be adjusted, and they cannot be removed once placed. ACOG recommends against pellet therapy for testosterone on exactly those grounds, and the National Academies singled out pellets as candidates for the FDA's difficult-to-compound list. Salivary and some at-home hormone tests, often marketed alongside compounded protocols as a way to "customize" dosing, are not useful for that purpose because hormone levels fluctuate and do not predict symptom relief. Dosing hormone therapy is guided by symptoms and safety, not by chasing a number.

Sources: National Academies, The Clinical Utility of Compounded Bioidentical Hormone Therapy (2020) · FDA, Menopause · ACOG Clinical Consensus No. 6, Compounded Bioidentical Menopausal Hormone Therapy

Whether you have a uterus settles the progestogen question. Your personal history settles much of the rest. A history of blood clots, a clotting disorder, obesity, high triglycerides, or gallbladder disease generally points toward a transdermal estrogen. Migraine, high blood pressure, and smoking are weighed in the same conversation. A personal history of breast cancer or another estrogen-sensitive cancer, unexplained vaginal bleeding, active liver disease, or a prior stroke or heart attack generally rules out systemic hormone therapy altogether, and the conversation turns to nonhormonal options instead.

Where you are in the transition matters too. A woman still having periods may do better with a cyclic progestogen, or with a low-dose birth control pill rather than menopausal hormone therapy; our guide to starting hormone therapy during perimenopause covers that choice. Finally, the right option is one you will actually use. Skin reactions to patches, forgetting a daily gel, the drowsiness some women feel on progesterone, and cost all legitimately change the answer, and switching between forms is routine rather than a failure.

Source: The Menopause Society, 2022 Hormone Therapy Position Statement

Schedule a visit if hot flashes, night sweats, sleep disruption, or mood changes are affecting your life and you want to understand whether hormone therapy fits your history, or if you are already on hormone therapy and your symptoms are not controlled, the side effects are bothering you, or you want to change how you take it. Every woman on hormone therapy should also have her plan reviewed at least once a year, because the right dose and route can change over time.

Be seen promptly for any unexpected vaginal bleeding on hormone therapy, especially bleeding after menopause, which should always be evaluated whether or not you use hormones. Seek emergency care for symptoms that could signal a blood clot or stroke: pain or swelling in one leg, sudden chest pain or shortness of breath, a sudden severe headache, sudden vision change, or weakness or numbness on one side of the body.

Source: ACOG, Hormone Therapy for Menopause