Progesterone cream: prescription vs over-the-counter, and what the evidence says

Search for progesterone cream and you will find jars on drugstore shelves, wellness sites, and compounding pharmacies, often sold as a natural way to balance hormones in midlife. The word progesterone is the same on all of them. What is actually in the jar, how much reaches your body, and whether it does the one job a menopause progestogen is prescribed for are very different questions. This guide walks through what the research and the label say, so you can have a sharper conversation with your clinician.

What progesterone cream is

Progesterone cream is a skin product that contains progesterone, the same hormone your ovaries make after ovulation. Topical progesterone creams have been sold over the counter in the US for decades, with sellers claiming they ease menopause symptoms ^[11]. Many postmenopausal women use over-the-counter or compounded creams and gels as their hormone treatment ^[6].

There are three different things people mean when they say progesterone cream:

• Over-the-counter (OTC) cream. Bought without a prescription, so no clinician chooses the dose or checks whether it suits you.
• Compounded prescription cream. Mixed by a compounding pharmacy from a prescriber's order. Compounded drugs are not FDA-approved, and the FDA does not verify their safety, effectiveness, or quality before they are marketed ^[9].
• FDA-approved progesterone. In the US, the FDA-approved bioidentical progesterone used in menopause hormone therapy is oral micronized progesterone, which comes with a full package insert ^{[1, 2]}.

"Bioidentical" describes the molecule, not the product. The Menopause Society points out that the term can mislead, because there are both FDA-approved and compounded bioidentical hormones, and only the FDA-approved ones are regulated and monitored for purity and efficacy ^[1].

Why progesterone matters in menopause hormone therapy

Estrogen is the hormone that relieves hot flashes and night sweats for most women on hormone therapy. But estrogen on its own stimulates the lining of the uterus (the endometrium). Over time, unopposed estrogen raises the risk of endometrial hyperplasia, an overgrowth of the lining, and of endometrial cancer ^[1].

That is why The Menopause Society says the menopause-related reason to use a progestogen is to prevent that overgrowth. Women with an intact uterus who use systemic estrogen should receive an adequate progestogen, with one exception: a specific combination of conjugated estrogens with bazedoxifene ^[1]. Progestogen is the umbrella term that covers both synthetic progestins and progesterone itself ^[1].

The word that matters is adequate. The Menopause Society notes that the dose and duration of the progestogen are what make endometrial protection work. When adequate progestogen is combined with systemic estrogen, the risk of endometrial cancer is not higher than in women who are not treated ^[1]. So the real question for any progesterone cream is not whether it contains progesterone. It is whether it delivers enough to the uterus to do this job.

Does progesterone cream absorb through the skin?

This is where the research gets messy. When women use progesterone creams, levels measured in standard blood serum tests are very low ^{[5, 6]}. Yet levels in saliva and in capillary blood (from a fingertip) can be high ^{[5, 6]}. Researchers have proposed theories for this gap, such as the cream's fatty ingredients pooling under the skin and red blood cells carrying the hormone to tissues, but these explanations are not confirmed ^[5].

Different studies have measured different things and reached different conclusions:

• In a small study of 12 postmenopausal women, an OTC cream used at its labeled dose produced whole-blood progesterone exposure that was comparable to an FDA-approved oral progesterone capsule. The authors questioned whether topical progesterone should be sold over the counter at all, given the potential risks of long-term use ^[7].
• In a study of 27 postmenopausal women using estrogen, a progesterone cream applied in the second half of each cycle produced blood progesterone levels too low to change the endometrium, and the authors concluded it did not appear effective at producing the expected change in the lining ^[4].
• Saliva readings in that study varied so much that the researchers found them unreliable for judging whether the hormone was working ^[4].

The bottom line on absorption: some progesterone gets in, but how much reaches the uterus, and how reliably, is not settled. A review in Climacteric found that alcohol-based gels appear to reach serum levels similar to the second half of a menstrual cycle, while water-based products may not, and that the evidence base is small ^[6].

Why saliva tests do not settle it

Some sellers and compounders use saliva tests to show that a cream is working or to adjust the dose. The Menopause Society calls salivary and urine hormone testing to guide dosing unreliable and does not recommend it ^[1]. A separate review describes the idea that salivary levels equal the active hormone in blood as a misconception ^[8].

Does progesterone cream protect the uterus?

This is the most important question, because endometrial protection is the reason a progestogen is prescribed alongside estrogen ^[1]. The honest answer is that it has not been established. Whether topical progesterone creams protect the endometrium from estrogen is disputed, mainly because serum levels are so low, and only a limited number of studies have reported a protective effect ^[6]. Reviewers have argued that the effect on the uterus should be judged by examining endometrial tissue, not by blood levels, and they call for long-term studies ^{[5, 6]}.

Meanwhile, the one guideline dose The Menopause Society gives for progesterone and the endometrium is for oral micronized progesterone, for example 200 mg a day for 12 to 14 days a month ^[1]. It does not give an equivalent dose for any cream.

If you use estrogen and have a uterus, do not rely on an over-the-counter cream as your only protection for the uterine lining. Talk with your clinician about a progestogen with evidence behind it. Any bleeding that starts more than 6 months after you begin combined hormone therapy should be checked ^[1].

What about progesterone cream for hot flashes?

Some women use progesterone cream on its own, hoping to ease hot flashes. A systematic review in the Annals of Pharmacotherapy found three placebo-controlled trials. One, using a cream compounded specifically for the study, found it worked better than placebo. Two, using manufactured creams, found no difference from placebo. The authors concluded that the trial evidence does not support the cream's efficacy for menopause-related hot flashes ^[3]. The most commonly reported side effects in those trials were vaginal bleeding and headaches ^[3].

Oral micronized progesterone is a different story. The Menopause Society notes that 300 mg taken nightly significantly reduced hot flashes and night sweats compared with placebo and improved sleep, while also noting that long-term data are lacking and that using a progestogen without estrogen for these symptoms is off-label ^[1]. You can read more in our guide to taking progesterone without estrogen.

The FDA-approved option: oral micronized progesterone

Oral micronized progesterone (brand name Prometrium) is structurally identical to the progesterone your body makes ^[1]. Its FDA label covers two uses: preventing endometrial hyperplasia in postmenopausal women who still have a uterus and are taking estrogen, and treating secondary amenorrhea, meaning periods that have stopped ^[2].

How it is taken

The label says to take it as a single daily dose at bedtime ^[2]. For endometrial protection, the labeled regimen is 200 mg once daily at bedtime for 12 days in a row of each 28-day cycle, in women taking daily conjugated estrogens tablets ^[2]. The Menopause Society describes similar dosing, such as 200 mg a day for 12 to 14 days a month ^[1]. The Menopause Society notes that regimens can be sequential or continuous-combined, and that many women choose a regimen that avoids periodic bleeding ^[1].

These figures come from the FDA label and The Menopause Society, and they are general ranges, not a plan for you. Your clinician decides your dose and schedule based on your estrogen, your history, and how you respond.

What to know before you take it

• Peanut oil. The capsules contain peanut oil, and the label says they should not be used by people allergic to peanuts ^[2].
• Drowsiness and dizziness. Progesterone can cause temporary dizziness and drowsiness, which is one reason it is taken at bedtime. Use caution with driving until you know how it affects you ^{[2, 10]}. The Menopause Society describes oral progesterone as mildly sedating ^[1].
• Common side effects. In the main label trial, where it was combined with conjugated estrogens, the most frequently reported reactions were headache, breast tenderness, joint pain, depression, and dizziness ^[2].
• Serious warnings. The label lists blood clots, stroke, heart attack, and breast cancer among its warnings, and it is not used in people with a history of breast cancer, unexplained vaginal bleeding, certain clotting disorders, or liver disease ^[2].

For a fuller list, see our guide to progesterone side effects.

OTC cream vs compounded cream vs oral capsule

What The Menopause Society says about compounded hormones

The Menopause Society lists several safety concerns with compounded bioidentical hormones: minimal government regulation and monitoring, overdosing and underdosing, impurities, lack of efficacy and safety data, and no label outlining risks ^[1]. It says patient preference alone should not justify a compounded product, and that compounding can be considered when someone cannot use an approved product, for example because of an allergy to an ingredient or a dose that is not available in approved form ^[1]. A peanut allergy and the peanut oil in Prometrium is one example of that kind of situation ^[2].

Getting progesterone through WarriorBabe Health

WarriorBabe Health does not sell a progesterone cream. We offer an oral progesterone capsule, taken nightly at bedtime, prescribed by a licensed clinician alongside estrogen when it is appropriate for you. Our capsule is compounded by a licensed pharmacy. That means it is not FDA-approved, and the FDA does not verify the safety, effectiveness, or quality of compounded drugs ^[9]. FDA-approved oral micronized progesterone also exists, and your clinician can talk with you about which option fits.

If you are using estrogen, or thinking about it, you can browse the full range on our hormone treatments page. To see whether hormone therapy might be an option for you, take the 2-minute quiz. A clinician reviews your answers and history and decides what, if anything, to prescribe.

This article is for general information. It is not medical advice and does not replace a visit with a licensed clinician who knows your history. Do not start, stop or change a medication without talking to your clinician. If you think you are having a medical emergency, call 911.