---
title: "soy isoflavones — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
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last_updated: "2026-07-14T03:11:59.643Z"
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  description: "soy isoflavones shows low returns (0.0%), but a concentrated shelf (top 5 take 69% of clicks) keeps it on the watch list."
  "og:description": "soy isoflavones shows low returns (0.0%), but a concentrated shelf (top 5 take 69% of clicks) keeps it on the watch list."
  "og:title": "soy isoflavones — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
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# **soy isoflavones**

**Worth a look**

Shows low returns (0.0%), but a concentrated shelf (top 5 take 69% of clicks) keeps it on the watch list.

Market size 31Growth 41Conversion 60Competition 27Returns 100Price range 67Avg price 83Brand share 60Review moat 46Quality gap 38

**Returns**

**Incredible****0.0%**

return rate — above 6% kills the launch gate

**Avg price**

**Great****$18.13**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$7.78–$29.47**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Conversion**

**Good****5.2%**

search→purchase rate — share of searches ending in a sale

**Brand share**

**Good****69%**

top-5 brand share — brands hold most of the demand

**Review moat**

**Okay****1,900.86**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Okay****+12.5%**

90-day search growth — must beat 0% to launch

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$145K**

$145K/yr · 155K searches

**Competition**

**Okay****69%**

top-5 click share — leaders hold, buyers still browse

## **Competition**

The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**13 **▼falling

**Sellers**

**68**

**Top-5 brand share**

**69%**

**Open market**

**23%**

- Puritan's Pride25% - Nutricost14% - Carlyle12% - Life Extension9% - NOW Foods8% - 21st Century8%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$15K20%$29K30%$44K40%$58K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Puritans Pride Non-GMO Soy Isoflavones 750mg Dietary Supplement with Active Daidzein Genistein and Glycitein Supports Menopause and Hot Flashes 120 Rapid Release Capsules](https://m.media-amazon.com/images/I/41G+1YdhbfL.jpg)**Puritans Pride Non-GMO Soy Isoflavones 750mg Dietary Supplement with Active Daidzein Genistein and Glycitein Supports Menopause and Hot Flashes 120 Rapid Release Capsules**Puritan's Pride**$13.19**4.5★2,288 rev](https://www.amazon.com/dp/B004R66DNQ) [2![Nutricost Soy Isoflavones 150mg 180 Veggie Capsules - Gluten Free Non-GMO Vegetarian Friendly](https://m.media-amazon.com/images/I/41qm5HhpPJL.jpg)**Nutricost Soy Isoflavones 150mg 180 Veggie Capsules - Gluten Free Non-GMO Vegetarian Friendly**Nutricost**$18.71**4.6★258 rev](https://www.amazon.com/dp/B09NS3PKCH) [3![Carlyle Soy Isoflavones for Women and Men | 200 Capsules | Non-GMO Gluten Free Extract Supplement](https://m.media-amazon.com/images/I/41Ulzvtz8mL.jpg)**Carlyle Soy Isoflavones for Women and Men | 200 Capsules | Non-GMO Gluten Free Extract Supplement**Carlyle**$18.23**4.6★345 rev](https://www.amazon.com/dp/B0B64HMX9C) [4![Life Extension Soy Isoflavones Heart Bone & Cellular Health Support for Post-menopausal Women Gluten-Free Non-GMO Vegetarian 30 Capsules](https://m.media-amazon.com/images/I/41LdnTfaA0L.jpg)**Life Extension Soy Isoflavones Heart Bone & Cellular Health Support for Post-menopausal Women Gluten-Free Non-GMO Vegetarian 30 Capsules**Life Extension**$17.11**4.4★227 rev](https://www.amazon.com/dp/B000QIY5GG) [5![NOW Foods Supplements Soy Isoflavones 60 mg (Plant Compounds Particularly Concentrated in Soybeans like Genistein Daidzein and Glycitein) 120 Veg Capsules](https://m.media-amazon.com/images/I/41Cq2E6T9EL.jpg)**NOW Foods Supplements Soy Isoflavones 60 mg (Plant Compounds Particularly Concentrated in Soybeans like Genistein Daidzein and Glycitein) 120 Veg Capsules**NOW Foods**$22.46**4.6★662 rev](https://www.amazon.com/dp/B0013OW4WE)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Menopause & Perimenopause Supplements for Women - Hot Flashes Relief](https://m.media-amazon.com/images/I/41oDihTKK8L.jpg)**Menopause & Perimenopause Supplements for Women - Hot Flashes Relief**DR VITAMIN SOLUTIONS**$10.38**41 rev4mo ago](https://www.amazon.com/dp/B0GS7QR99T) [![BulkSupplements.com Soy Isoflavones Capsules - Soy Isoflavones Supplement - Vegan & Gluten Free 1 Capsule per Serving (150mg) 240 Count (Pack of 1)](https://m.media-amazon.com/images/I/41FpQRyTALL.jpg)**BulkSupplements.com Soy Isoflavones Capsules - Soy Isoflavones Supplement - Vegan & Gluten Free 1 Capsule per Serving (150mg) 240 Count (Pack of 1)**BulkSupplements**$22.04**54 rev1y ago](https://www.amazon.com/dp/B0DRZ47LNW) [![Like Mine Soy Isoflavones (100 Capsules) Pure & Natural Dietary Supplement No Fillers](https://m.media-amazon.com/images/I/31VsmnJKkkL.jpg)**Like Mine Soy Isoflavones (100 Capsules) Pure & Natural Dietary Supplement No Fillers**Like Mine**$9.53**51 rev3y ago](https://www.amazon.com/dp/B0C2ZSJ6PY) [![Carlyle Soy Isoflavones for Women and Men | 200 Capsules | Non-GMO Gluten Free Extract Supplement](https://m.media-amazon.com/images/I/41Ulzvtz8mL.jpg)**Carlyle Soy Isoflavones for Women and Men | 200 Capsules | Non-GMO Gluten Free Extract Supplement**Carlyle**$18.23**345 rev4y ago](https://www.amazon.com/dp/B0B64HMX9C) [![Nutricost Soy Isoflavones 150mg 180 Veggie Capsules - Gluten Free Non-GMO Vegetarian Friendly](https://m.media-amazon.com/images/I/41qm5HhpPJL.jpg)**Nutricost Soy Isoflavones 150mg 180 Veggie Capsules - Gluten Free Non-GMO Vegetarian Friendly**Nutricost**$18.71**258 rev4y ago](https://www.amazon.com/dp/B09NS3PKCH)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Menopause & Perimenopause Supplements for Women - Hot Flashes Relief](https://m.media-amazon.com/images/I/41oDihTKK8L.jpg)**Menopause & Perimenopause Supplements for Women - Hot Flashes Relief**DR VITAMIN SOLUTIONS**$10.38**4.7★**▲ 269%**](https://www.amazon.com/dp/B0GS7QR99T) [![Estroven Complete Multi-Symptom Menopause Supplement for Women 28 Ct. Clinically Proven Ingredient Provide Menopause Relief & Night Sweats & Hot Flash Relief* Drug-Free & Non-GMO](https://m.media-amazon.com/images/I/41-+sOsBsWL.jpg)**Estroven Complete Multi-Symptom Menopause Supplement for Women 28 Ct. Clinically Proven Ingredient Provide Menopause Relief & Night Sweats & Hot Flash Relief* Drug-Free & Non-GMO**Estroven**$18.49**4.4★**▲ 33%**](https://www.amazon.com/dp/B07N813336) [![Life Extension Soy Isoflavones Heart Bone & Cellular Health Support for Post-menopausal Women Gluten-Free Non-GMO Vegetarian 30 Capsules](https://m.media-amazon.com/images/I/41LdnTfaA0L.jpg)**Life Extension Soy Isoflavones Heart Bone & Cellular Health Support for Post-menopausal Women Gluten-Free Non-GMO Vegetarian 30 Capsules**Life Extension**$17.11**4.4★**▲ 19%**](https://www.amazon.com/dp/B000QIY5GG) [![Puritans Pride Non-GMO Soy Isoflavones 750mg Dietary Supplement with Active Daidzein Genistein and Glycitein Supports Menopause and Hot Flashes 120 Rapid Release Capsules](https://m.media-amazon.com/images/I/41G+1YdhbfL.jpg)**Puritans Pride Non-GMO Soy Isoflavones 750mg Dietary Supplement with Active Daidzein Genistein and Glycitein Supports Menopause and Hot Flashes 120 Rapid Release Capsules**Puritan's Pride**$13.19**4.5★**— 10%**](https://www.amazon.com/dp/B004R66DNQ) [![GNC SuperFoods Soy Isoflavone Concentrate 90 Capsules Supports for Bone and Heart Health](https://m.media-amazon.com/images/I/31mpwi356hL.jpg)**GNC SuperFoods Soy Isoflavone Concentrate 90 Capsules Supports for Bone and Heart Health**GNC**$25.06**4.5★**— 8%**](https://www.amazon.com/dp/B00CNA5BKE)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +12.5% search growth over the last 90 days.

4K3KSpike '24Spike '25 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.6×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**13%

*“Excellent product”*

**Menstrual Issues**12%

*“Menopause support”*

**Hormonal Balance**7%

*“Definitely helps, I have had such terrible hormonal issues and this has really helped me”*

**Sleep Quality**7%

*“My sleep has improved”*

**Vitamin**6%

*“A supplement that really works”*

**Side Effects**4%

*“It helps control typical symptoms without rare side effects”*

**Efficiency**4%

*“Ok. They were as effective as I was hoping”*

**Value For Money**3%

*“Really worth every penny”*

**Ease Of Use**3%

*“in that sense this seemed like a convenient option”*

**Advertised Vs Actual Product**3%

*“Works like a charm”*

### **What buyers complain about **

**Functionality-Overall**24%

*“It doesnt do what this one does”*

**Sleep Quality**16%

*“can't sleep”*

**Side Effects**11%

*“This made me have the worst stomach”*

**Value For Money**4%

*“Too pricey”*

**Dosage**4%

*“I immediately stopped taking it”*

**Weight Loss**3%

*“I would not recommend this product if you want to sleep through the night and lose weight”*

**Durability**2%

*“3 months later the hot flashes are back”*

**Energy Level**2%

*“My energy levels have not changed Im still tired”*

**Smell**2%

*“The taste and smell are disgusting and can't return the product”*

**Taste-Overall**2%

*“No taste and very effective”*

### **Top return reasons **

**Functionality-Overall**100%