Best Estrogen Supplements (2026): 6 Plant-Based Options Compared, and What the Evidence Says

At a Glance

• Best Overall Metagenics Estrovera – 4 mg of ERr 731 rhubarb extract, the plant extract with the strongest placebo-controlled trial among our picks, in a once-daily enteric-coated tablet.Review ↓
• Best Budget Soy Isoflavone Nutricost Soy Isoflavones 150 mg – 60 mg of soy isoflavones per capsule, close to the amount used in hot flash studies, at the lowest daily cost on our list.Review ↓
• Best Drugstore ERr 731 Estroven Complete – the same 4 mg dose of rhapontic rhubarb extract as Estrovera, at about half the daily cost.Review ↓
• Best for Non-Equol Producers EQUELLE S-Equol – 10 mg of S-equol, the soy compound many people can’t make on their own.Review ↓
• Best Estrogen-Free Option Remifemin – the most-studied black cohosh extract, which doesn’t act like estrogen.Review ↓
• Best Hops Extract Swanson Estro8Pn Hop Extract – 10 mg of hop extract, a source of the plant estrogen 8-PN.Review ↓

The Short Answer: No over-the-counter supplement contains real estrogen. The closest options are plant compounds that act a little like estrogen (phytoestrogens), and their effect on hot flashes is small¹². If you want to try one, Metagenics Estrovera is our top pick: its ERr 731 extract cut menopause symptom scores more than placebo in a 12-week trial³. On a budget, Nutricost Soy Isoflavones gives 60 mg of isoflavones a day for very little cost.

On this page

1. Do You Actually Need an Estrogen Supplement?
2. Find Your Match
3. What’s Actually in These Products?
4. Estrogen Supplements Compared
5. The 6 Best Estrogen Supplements, Reviewed
6. Products We Didn’t Recommend
7. Evidence Scorecard
8. How to Take a Plant Estrogen Supplement
9. What to Expect and When
10. Safety, Side Effects & Drug Interactions
11. Food First: Where Else to Get Plant Estrogens
12. How to Choose an Estrogen Supplement
13. Frequently Asked Questions
14. Final Verdict

If you need actual estrogen, for example for severe hot flashes, vaginal dryness or bone protection, prescription hormone therapy is the only proven option. Talk to your doctor about it.

Many products sold as “estrogen supplements” are really DIM, which helps the body break down estrogen rather than adding to it. We cover those in our DIM supplements guide.

We compared 16 products on active ingredient, dose against research, testing, other ingredients and cost. Every product is ranked by its BFN Score, a relative score within this guide. See our review process for how we score.

Do You Actually Need an Estrogen Supplement?

Estrogen falls during perimenopause and menopause, which can bring hot flashes, night sweats, sleep problems, vaginal dryness and bone loss. Plant estrogens don’t replace that estrogen; at best they slightly reduce hot flashes for some women²⁴.

A plant-based option may make sense if you:

• Have mild to moderate hot flashes and want to try something before or instead of prescription treatment.
• Can’t or don’t want to take hormone therapy, and your doctor agrees a supplement is reasonable.
• Eat little soy and want to see whether isoflavones help.

They are unlikely to help much if your symptoms are severe, if your main problem is vaginal dryness (a low-dose vaginal estrogen works far better), or if you want to protect your bones. Hormone therapy and several non-hormonal prescription medicines have much stronger evidence¹.

Who Should Skip It or Ask First

• Anyone with a history of breast, uterine or ovarian cancer, or other estrogen-sensitive conditions.
• People taking tamoxifen, aromatase inhibitors, hormone therapy or birth control.
• People taking thyroid medicine; soy can reduce levothyroxine absorption, so take them apart.
• Anyone with liver disease (especially before taking black cohosh)⁵.
• People who are pregnant, breastfeeding or trying to conceive.

Find Your Match

If you…	Consider	Why
Want the best-studied plant extract	Metagenics Estrovera	ERr 731 in the enteric-coated form used in trials
Want the same extract for less	Estroven Complete	Same 4 mg dose, about half the daily cost
Want soy isoflavones at a low cost	Nutricost Soy Isoflavones 150 mg	60 mg isoflavones per capsule
Tried soy without results	EQUELLE S-Equol	Gives equol directly, no gut conversion needed
Want to avoid estrogen-like compounds	Remifemin	Black cohosh isn’t a phytoestrogen
Are allergic to soy	Metagenics Estrovera	Rhubarb-based, soy-free
Want a hops-based option	Swanson Estro8Pn Hop Extract	Hop extract, a source of 8-PN
Have had breast cancer	Talk to your oncologist first	Safety of plant estrogens isn’t established

What’s Actually in These Products?

Ingredient	Type	Studied dose	What trials show
ERr 731 (rhapontic rhubarb)	Plant estrogen (targets ERβ receptors)	4 mg a day	Lower menopause symptom scores than placebo in a 12-week trial3
Soy isoflavones	Plant estrogen	About 54 mg a day (aglycones)	About 20% fewer hot flashes than placebo4
S-equol	Soy-derived plant estrogen	10–20 mg a day	Fewer hot flashes in a meta-analysis6
Black cohosh	Non-hormonal herb	40 mg a day (iCR extract)	Mixed; Cochrane found too little evidence7
Hops (8-PN)	Plant estrogen	100 mcg 8-PN a day	Small early benefit in one small trial8
DIM	Estrogen metabolism	—	Doesn’t raise estrogen

Estrogen Supplements Compared

Scroll sideways to see every column →

#	Product	Active Ingredient	Dose per Serving	Daily Serving	Servings	Purity Testing	Additives	Diet	Cost
1	Metagenics Estrovera	ERr 731 rhubarb root extract	4 mg	1 tablet	30	Brand says third-party tested	Clean	Vegetarian, soy-free	$$$
2	Nutricost Soy Isoflavones	Soy germ extract	150 mg (60 mg isoflavones)	1 capsule	180	Not stated	Clean	Vegan; contains soy	$$$
3	Estroven Complete	Rhapontic rhubarb root extract	4 mg	1 caplet	28	Not stated	Note: titanium dioxide color	Soy-free	$$$
4	EQUELLE S-Equol	S-equol from fermented soy germ	10 mg	2 tablets	30 per bottle	Not stated	Clean	Derived from soy	$$$
5	Remifemin	Black cohosh iCR extract	2.5 mg (= 21 mg herb)	2 tablets	60	Made in Germany	Note: lactose	Contains milk	$$$
6	Swanson Estro8Pn	Hop extract	10 mg (8-PN not stated)	1–2 capsules	60–120	Not stated	Clean	Vegetarian	$$$

The 6 Best Estrogen Supplements, Reviewed

#1Best Overall

1. Metagenics Estrovera

BFN Score9.6/10

$$$Premium30 servings1 tablet per serving

Strongest atDose & safetyWeakest atValue & practicality

Estrovera gives 4 mg of ERr 731, an extract of rhapontic rhubarb root, in an enteric-coated tablet, the same form tested in placebo-controlled trials.

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Label Reality Check

Active ingredient + form

rhapontic rhubarb root extract ERr 731 (2.2 mg rhaponticin, 1 mg desoxyrhaponticin), enteric-coated

Dose per serving

1 tablet (4 mg)

Dose vs. research

Matches the 4 mg daily dose used in trials³

% DV / Upper Limit

No DV or UL

Purity testing

Not stated on the label (brand says its products are third-party tested)

Other ingredients

microcrystalline cellulose, stearic acid, croscarmellose sodium, silica, enteric coating (ethyl cellulose, hypromellose, medium-chain triglycerides, ammonium hydroxide, sodium alginate, hydroxypropylcellulose, oleic acid, stearic acid)

Additives

Clean

Allergens & diet

vegetarian, gluten-free, non-GMO, soy-free

Clinical Relevance

In a 12-week trial of 109 perimenopausal women, ERr 731 lowered menopause symptom scores, including hot flashes, more than placebo³. Its compounds act mainly on the ERβ estrogen receptor, not the ERα receptor linked to breast and uterine tissue growth. This is promising, but long-term safety data in women with cancer history are limited.

Strengths

• Same extract and form as the trials
• One small tablet a day
• Soy-free

Limitations

• Highest daily cost
• Only 30 tablets per bottle
• Evidence comes from a small number of trials

Practical Details

Take 1 tablet a day with water. Give it 4–12 weeks before judging results.

Best For / Not For

Best forwomen with hot flashes who want the best-studied plant extract.

Not forwomen with a history of estrogen-sensitive cancer, unless their doctor approves.

Buyer Experience

Many buyers say their hot flashes and night sweats dropped sharply. Some noticed it within days, others only after three to four weeks. Better sleep and steadier mood come up often.

A sizable share felt no change, even after a second bottle. Opinions on value are split, and a few mention a bitter taste.

vs. Estroven Complete

Choose Estrovera for the enteric-coated tablet used in trials and no added colors. Choose Estroven Complete for the same dose at about half the daily cost.

Nutritionist’s Note

If you notice no change after 12 weeks, stop; a longer course is unlikely to help.

Verdict: The best-supported plant-based option for hot flashes, in a clean once-daily tablet.

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#2Best Budget Soy Isoflavone

2. Nutricost Soy Isoflavones 150 mg

BFN Score9.4/10

$$$Budget180 servings1 capsule per serving

Strongest atValue & practicalityWeakest atEvidence fit

Nutricost gives 150 mg of soy germ extract per capsule, standardized to 60 mg of isoflavones, with 180 capsules per bottle.

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Label Reality Check

Active ingredient + form

soy (Glycine max) germ extract, min. 40% total isoflavones

Dose per serving

1 capsule (150 mg extract, 60 mg isoflavones)

Dose vs. research

Within studied range; close to the median 54 mg used in hot flash trials⁴

% DV / Upper Limit

No DV or UL

Purity testing

Not stated (made in a GMP facility)

Other ingredients

rice flour, hypromellose capsule, calcium laurate

Additives

Clean

Allergens & diet

vegan, gluten-free, non-GMO; contains soy

Clinical Relevance

A meta-analysis of randomized trials found soy isoflavones cut hot flash frequency by about 20% more than placebo, with products higher in genistein working better⁴. The label doesn’t list how much genistein each capsule contains.

Strengths

• Lowest daily cost
• Studied isoflavone amount
• Six-month supply

Limitations

• Genistein amount not stated
• No outside certification
• Contains soy

Practical Details

Take 1 capsule a day with food. Benefits, if any, usually show after 6–12 weeks.

Best For / Not For

Best forwomen who want to try soy isoflavones at low cost.

Not forpeople with soy allergy or estrogen-sensitive conditions.

Buyer Experience

The review base is small. Most buyers who mention results say it eases hot flashes, and they praise the quality and the price. Few report side effects.

A minority noticed no difference.

vs. EQUELLE S-Equol

Choose Nutricost for a much lower cost. Choose EQUELLE if soy isoflavones haven’t helped you, since many people can’t turn them into equol.

Nutritionist’s Note

If you take levothyroxine, take soy isoflavones at least 4 hours apart from it.

Verdict: The cheapest way to try the soy isoflavone dose used in research.

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#3Best Drugstore ERr 731

3. Estroven Complete

BFN Score9.3/10

$$$Mid-range28 servings1 caplet per serving

Strongest atValue & practicalityWeakest atPurity & additives

Estroven Complete uses the same 4 mg of rhapontic rhubarb root extract as Estrovera, with the same amounts of rhaponticin and desoxyrhaponticin, at about half the daily cost.

Check price on Amazon →

Label Reality Check

Active ingredient + form

rhapontic rhubarb root extract (2.2 mg rhaponticin, 1 mg desoxyrhaponticin)

Dose per serving

1 caplet (4 mg)

Dose vs. research

Matches the 4 mg daily dose used in trials³

% DV / Upper Limit

No DV or UL

Purity testing

Not stated

Other ingredients

dicalcium phosphate, microcrystalline cellulose, coating (titanium dioxide color), sodium alginate, medium-chain triglycerides, maltodextrin, riboflavin (color), stearic acid, croscarmellose sodium, magnesium stearate

Additives

Note – titanium dioxide and riboflavin used as colors

Allergens & diet

soy-free

Clinical Relevance

The extract and dose match the ERr 731 trials³. The label doesn’t say the caplet is enteric-coated, which was the form used in those studies.

Strengths

• Same extract dose as Estrovera
• About half the daily cost
• Widely available

Limitations

• Added colors
• 28 caplets per box
• Coating type not stated

Practical Details

Take 1 caplet a day with water.

Best For / Not For

Best forwomen who want ERr 731 at a lower cost.

Not forpeople avoiding titanium dioxide.

Buyer Experience

Buyers often report better sleep, fewer night sweats and a better mood. Many say it took two to four weeks to notice a change.

Results are split, though: a large minority saw no difference in hot flashes. Some report nausea, and opinions on value are divided.

vs. Metagenics Estrovera

Choose Estroven Complete to save money. Choose Estrovera for the enteric-coated form and no added colors.

Nutritionist’s Note

Estroven sells several formulas with different ingredients; check that the label lists rhapontic rhubarb before you buy.

Verdict: The trial dose of rhubarb extract at a drugstore price.

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#4Best for Non-Equol Producers

4. EQUELLE S-Equol

BFN Score9.1/10

$$$Premium30 servings per bottle2 tablets per serving

Strongest atPurity & additivesWeakest atValue & practicality

EQUELLE gives 10 mg of S-equol per serving, a compound some people’s gut bacteria make from soy isoflavones and others can’t make at all.

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Label Reality Check

Active ingredient + form

S-equol from fermented soy germ

Dose per serving

2 tablets (10 mg S-equol; also 240 mg calcium)

Dose vs. research

Within studied range (10–20 mg a day)⁶

% DV / Upper Limit

calcium 18% DV

Purity testing

Not stated

Other ingredients

dicalcium phosphate, fermented soy germ, silicon dioxide, croscarmellose sodium, magnesium stearate, coating (hypromellose, glycerin, hydroxypropyl cellulose), microcrystalline cellulose

Additives

Clean

Allergens & diet

derived from soy

Clinical Relevance

A meta-analysis of randomized trials found equol reduced hot flash scores compared with placebo⁶. Only some people can make equol from soy, which may explain why soy isoflavones help some women and not others⁹.

Strengths

• Gives equol directly
• Clean ingredient list
• Studied 10 mg dose

Limitations

• High daily cost
• 2 tablets a day
• Not recommended by the Menopause Society¹

Practical Details

Take 2 tablets a day, together or split. The pack contains three 30-day bottles.

Best For / Not For

Best forwomen who tried soy isoflavones without results.

Not forbudget buyers or people with soy allergy.

Buyer Experience

The review base is small, and experiences are split almost evenly. Some buyers say hot flashes and night sweats dropped within days or weeks; others saw no change after two months.

Price is the most common complaint, and a few report mood changes.

vs. Nutricost Soy Isoflavones

Choose EQUELLE if soy hasn’t helped you. Choose Nutricost to try soy isoflavones first at a fraction of the cost.

Nutritionist’s Note

Try a soy isoflavone for 8–12 weeks first; if it works, you probably make equol and don’t need the more expensive product.

Verdict: A good next step for women who don’t respond to soy isoflavones.

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#5Best Estrogen-Free Option

5. Remifemin

BFN Score8.8/10

$$$Mid-range60 servings2 tablets per serving

Strongest atQuality & trustWeakest atEvidence fit

Remifemin uses RemiSure (iCR), a standardized black cohosh extract made in Germany and the version used in most black cohosh studies. Black cohosh isn’t a plant estrogen, so it suits women who want to avoid estrogen-like compounds.

Check price on Amazon →

Label Reality Check

Active ingredient + form

black cohosh root/rhizome dry extract (RemiSure iCR, 8.5:1)

Dose per serving

1 tablet (2.5 mg extract, equal to 21 mg herb); 2 tablets a day

Dose vs. research

Matches the 40 mg herb-equivalent daily dose used in iCR studies

% DV / Upper Limit

No DV or UL

Purity testing

Not stated (made in Germany)

Other ingredients

lactose monohydrate, cellulose, potato starch, magnesium stearate

Additives

Note – lactose

Allergens & diet

contains milk

Clinical Relevance

Results are mixed. A Cochrane review found too little evidence that black cohosh reduces hot flashes⁷, while a 2023 review of 22 studies found some benefit for overall menopause symptoms⁵. Rare cases of liver injury have been reported with black cohosh products⁵.

Strengths

• Most-studied black cohosh extract
• Not a phytoestrogen
• Standardized extract

Limitations

• Mixed evidence
• Rare liver injury reports
• Contains lactose

Practical Details

Take 1 tablet in the morning and 1 in the evening. Full effects may take 8 weeks.

Best For / Not For

Best forwomen who want a non-estrogenic herb.

Not forpeople with liver disease or lactose intolerance.

Buyer Experience

Many buyers report fewer hot flashes and night sweats, better sleep and a calmer mood, often after a few weeks of daily use.

A sizable minority noticed no effect, and some report stomach upset or other side effects.

vs. Metagenics Estrovera

Choose Remifemin if you want to avoid estrogen-like compounds. Choose Estrovera for stronger trial results.

Nutritionist’s Note

Stop and see a doctor if you notice dark urine, yellow skin or eyes, or unusual tiredness⁵.

Verdict: The best-made black cohosh option for women avoiding plant estrogens.

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#6Best Hops Extract

6. Swanson Estro8Pn Hop Extract

BFN Score8.2/10

$$$Mid-range60–120 servings1–2 capsules per serving

Strongest atPurity & additivesWeakest atEvidence fit

Swanson’s Estro8Pn gives 10 mg of hop extract per capsule. Hops contain 8-prenylnaringenin (8-PN), one of the strongest known plant estrogens.

Check price on Amazon →

Label Reality Check

Active ingredient + form

Estro8Pn hop extract (Humulus lupulus female cone and flower)

Dose per serving

1 capsule (10 mg extract); 1–2 a day

Dose vs. research

Unclear – the label doesn’t state the 8-PN amount used in trials (100 mcg a day)⁸

% DV / Upper Limit

No DV or UL

Purity testing

Not stated

Other ingredients

brown rice flour, hypromellose capsule, magnesium stearate

Additives

Clean

Allergens & diet

vegetarian

Clinical Relevance

In a small 12-week trial, a hop extract with 100 mcg of 8-PN improved menopause symptoms more than placebo at 6 weeks, but the effect was weaker by the end⁸. Without an 8-PN amount on the label, you can’t tell how this product compares.

Strengths

• Simple, clean formula
• Soy-free
• Two bottles per pack

Limitations

• 8-PN content not stated
• Very little research
• Hops can cause drowsiness

Practical Details

Take 1 capsule once or twice a day. Taking it in the evening may suit you if it makes you sleepy.

Best For / Not For

Best forwomen who want to try a soy-free plant estrogen.

Not forpeople with estrogen-sensitive conditions or anyone taking sedatives.

Buyer Experience

The review base is very small. Some buyers report fewer hot flashes and mood swings, while others noticed nothing after months.

A few felt nauseous when taking it on an empty stomach, and several find it expensive per capsule.

vs. Metagenics Estrovera

Choose Swanson for a lower daily cost. Choose Estrovera for a standardized extract with stronger trial results.

Nutritionist’s Note

Avoid combining hops with alcohol or sleep aids, as the sedative effects can add up.

Verdict: An inexpensive way to try hops, but with the least evidence on our list.

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Products We Didn’t Recommend

DIM products (SMNutrition DIM, Zazzee DIM, Deal Supplement DIM, aSquared Nutrition DIM). These were on the old version of this page. DIM helps the body break down estrogen; it doesn’t add estrogen. See our DIM supplements guide if that’s what you want.

Metagenics EstroFactors and Natural Factors EstroSense. “Estrogen metabolism” formulas built around DIM and cruciferous extracts, not plant estrogens.

Pueraria mirifica. A very potent plant estrogen with inconsistent strength between products and little human safety data.

SOLARAY PhytoEstrogen. A blend that includes wild yam; the body can’t turn wild yam into estrogen.

NOW Soy Isoflavones 60 mg. A good product, but similar to our Nutricost pick at a higher daily cost.

Red clover blossom capsules. Most aren’t standardized for isoflavones, so the dose is unknown.

Flaxseed lignan supplements. A placebo-controlled trial found flaxseed didn’t reduce hot flashes.

Evidence Scorecard

Use	What it’s studied for	Evidence level	Notes
Hot flashes (ERr 731)	Frequency and severity	Moderate	Small number of trials, mostly from one research group3
Hot flashes (soy isoflavones)	Frequency and severity	Moderate	About 20% better than placebo in a meta-analysis4
Hot flashes (S-equol)	Frequency	Limited to moderate	Benefit in a meta-analysis; trials are small6
Hot flashes (black cohosh)	Frequency	Mixed	Cochrane: insufficient evidence7
Hot flashes (hops 8-PN)	Overall symptoms	Limited	One small trial8
Vaginal dryness, bone loss	Symptom relief, fracture prevention	Not supported	Prescription estrogen works; supplements don’t

The Menopause Society reviewed all of these and doesn’t recommend supplements for hot flashes, because the effects are small and inconsistent¹.

How to Take a Plant Estrogen Supplement

Step	What to do	Why
Choose one	Start with a single product	Makes it clear what’s working
Daily amount	Follow the studied dose (see table above)	Higher doses aren’t better studied
Track symptoms	Note hot flashes per day for 2 weeks before and during	Shows whether it actually helps
Trial length	8–12 weeks	Most trials judge results at 12 weeks34
Stop if no change	After 12 weeks	Longer use is unlikely to help

• Don’t combine several plant estrogen products at once.
• Tell your doctor before starting, especially if you take hormones, tamoxifen or thyroid medicine.
• Stop and see a doctor if you have vaginal bleeding after menopause, breast changes, or signs of liver problems.

What to Expect and When

Plant estrogens don’t work like a prescription. Most trials report small changes after 6–12 weeks³⁴. Hot flashes also improve on their own over time and with placebo, so tracking them helps you see if the supplement adds anything.

Safety, Side Effects & Drug Interactions

Most side effects are mild: stomach upset, bloating and headache. Black cohosh has been linked to rare cases of liver injury⁵.

Medication or condition	Possible interaction	What to do
Breast, uterine or ovarian cancer history	Plant estrogens may act on estrogen receptors	Ask your oncologist first
Tamoxifen or aromatase inhibitors	Plant estrogens may interfere	Avoid unless your oncologist approves
Hormone therapy or birth control	Unclear combined effect	Ask your doctor
Levothyroxine	Soy can reduce absorption	Take at least 4 hours apart
Liver disease	Black cohosh liver injury reports5	Avoid black cohosh
Sedatives, sleep aids, alcohol	Hops may add drowsiness	Avoid combining
Pregnancy or breastfeeding	Not studied	Don’t use

Food First: Where Else to Get Plant Estrogens

Food	Why it helps
Tofu, tempeh, edamame, soy milk	Natural sources of soy isoflavones4
Miso and natto	Fermented soy with isoflavones
Chickpeas and lentils	Small amounts of isoflavones
Ground flaxseed	Lignans, another type of plant estrogen

Two servings of soy foods a day provide roughly 50–60 mg of isoflavones, similar to a supplement.

How to Choose an Estrogen Supplement

Plant Estrogen, Not DIM

Check the active ingredient. DIM, calcium D-glucarate and “estrogen detox” formulas lower estrogen activity.

Named, Standardized Extract

Look for a named extract with a stated amount, such as ERr 731 (4 mg), isoflavones in mg, or S-equol in mg.

Dose That Matches Research

Compare the label with the studied doses in the table above.

Soy or Soy-Free

Soy isoflavones and S-equol come from soy; rhubarb extract, black cohosh and hops don’t.

Single Ingredient

Simple formulas make it easier to tell what’s working and avoid unnecessary herbs.

Important: These supplements are not intended to diagnose, treat, cure, or prevent any disease. Results vary by individual. If you have a health condition or take medications, check with your doctor before adding any new supplement to your routine.

Frequently Asked Questions

Final Verdict

Metagenics Estrovera is the best estrogen supplement for most women: the trial dose of ERr 731 in a clean once-daily tablet.

On a budget, choose Nutricost Soy Isoflavones or Estroven Complete. If soy hasn’t worked, try EQUELLE. If you want to avoid estrogen-like compounds, choose Remifemin.

Keep expectations modest, give it 12 weeks, and talk to your doctor about prescription options if symptoms are affecting your life. For more, see our guides to soy supplements for menopause and black cohosh supplements.

Sources & History9 sources · updated November 4, 2026

References

1. 2023 Nonhormone Therapy Position Statement (press release summarizing the statement published in Menopause, 2023) — The Menopause Society
2. Menopausal Symptoms and Complementary Health Practices: What the Science Says — National Center for Complementary and Integrative Health
3. Efficacy and Safety of a Special Extract of Rheum rhaponticum (ERr 731) in Perimenopausal Women With Climacteric Complaints: A 12-Week Randomized, Double-Blind, Placebo-Controlled Trial — Menopause, 2006
4. Extracted or Synthesized Soybean Isoflavones Reduce Menopausal Hot Flash Frequency and Severity: Systematic Review and Meta-Analysis of Randomized Controlled Trials — Menopause, 2012
5. Black Cohosh — National Center for Complementary and Integrative Health
6. Equol Decreases Hot Flashes in Postmenopausal Women: A Systematic Review and Meta-Analysis of Randomized Clinical Trials — Journal of Medicinal Food, 2019
7. Black Cohosh (Cimicifuga spp.) for Menopausal Symptoms — Cochrane Database of Systematic Reviews, 2012
8. A Prospective, Randomized, Double-Blind, Placebo-Controlled Study of Standardized Hop Extracts to Alleviate Menopausal Discomforts — Maturitas, 2006
9. S-Equol: A Potential Nonhormonal Agent for Menopause-Related Symptom Relief — Journal of Women’s Health, 2015

Update history

• November 4, 2026Rewritten under BFN Score v3: replaced the previous DIM picks (which lower estrogen activity) with plant estrogen and non-hormonal options; compared 16 labels and ranked six by active ingredient, dose against research, testing, other ingredients and cost; removed fixed prices; added an ingredient evidence table, the Menopause Society’s position, an evidence scorecard and a safety table.