---
title: "glucomannan — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/glucomannan"
last_updated: "2026-07-13T22:29:30.767Z"
locale: en
meta:
  description: "glucomannan shows low returns (0.0%), but a concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list."
  "og:description": "glucomannan shows low returns (0.0%), but a concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list."
  "og:title": "glucomannan — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
---

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# **glucomannan**

**Worth a look**

Shows low returns (0.0%), but a concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list.

Market size 64Growth 20Conversion 79Competition 16Returns 100Price range 70Avg price 81Brand share 27Review moat 45Quality gap 81

**Returns**

**Incredible****0.0%**

return rate — above 6% kills the launch gate

**Quality gap**

**Great****4.2★**

avg incumbent rating — lower means beatable quality

**Avg price**

**Great****$17.31**

avg listing price — sweet spot $15–$100

**Conversion**

**Great****8.1%**

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

**Price range**

**Good****$9.92–$26.64**

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

**Market size**

**Good****$599K**

$599K/yr · 426K searches

**Review moat**

**Okay****1,987.5**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Okay****89%**

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

**Growth**

**Bad****-9.1%**

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

**Competition**

**Bad****81%**

top-5 click share — a locked-up shelf

## **Competition**

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**9 **—flat

**Sellers**

**26**

**Top-5 brand share**

**89%**

**Open market**

**7%**

- Nutricost35% - NOW Foods33% - BulkSupplements8% - Nature's Way7% - Brieofood5% - Best Naturals4% - Open — no brand owns it (3 brands, 7%)

## **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%$60K20%$120K30%$180K40%$240K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 12 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free](https://m.media-amazon.com/images/I/41JaxdUhJZL.jpg)**Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free**Nutricost**$16.82**4.1★4,976 rev](https://www.amazon.com/dp/B01HQZB4K6) [2![NOW Foods Supplements Glucomannan (Amorphophallus konjac) 575 mg Supports Regularity* Healthy Weight Management* 180 Veg Capsules](https://m.media-amazon.com/images/I/416TowyYf0L.jpg)**NOW Foods Supplements Glucomannan (Amorphophallus konjac) 575 mg Supports Regularity* Healthy Weight Management* 180 Veg Capsules**NOW Foods**$14.63**4.2★3,871 rev](https://www.amazon.com/dp/B000MGWI02) [3![NOW Foods Supplements Glucomannan (Amorphophallus konjac) Pure Powder Supports Regularity* Healthy Weight Management* 8 Ounce (Pack of 1)](https://m.media-amazon.com/images/I/41XbMwZE0YL.jpg)**NOW Foods Supplements Glucomannan (Amorphophallus konjac) Pure Powder Supports Regularity* Healthy Weight Management* 8 Ounce (Pack of 1)**NOW Foods**$14.04**4.3★4,985 rev](https://www.amazon.com/dp/B005F9W9JQ) [4![BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)](https://m.media-amazon.com/images/I/41BBykx2CJL.jpg)**BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)**BulkSupplements**$22.83**4.4★171 rev](https://www.amazon.com/dp/B0BB8J861P) [5![Natures Way Herbal Glucomannan from Konjac Root Capsules Promotes Feelings of Fullness* 1 995 mg per 3-Capsule Serving Non-GMO Project Verified Vegan 100 Capsules (Packaging May Vary)](https://m.media-amazon.com/images/I/41VyB3Ks++L.jpg)**Natures Way Herbal Glucomannan from Konjac Root Capsules Promotes Feelings of Fullness* 1 995 mg per 3-Capsule Serving Non-GMO Project Verified Vegan 100 Capsules (Packaging May Vary)**Nature's Way**$12.03**4.0★4,173 rev](https://www.amazon.com/dp/B00020HQYG)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Clean Nutra Berberine and Ceylon Cinnamon Supplement Bitter Melon Glucomannan Gymnema Sylvestre Chromium Moringa Milk Thistle Turmeric Apple Cider Vinegar Digestive Enzymes Inositol Pills 90 Capsules](https://m.media-amazon.com/images/I/514+MPm5DAL.jpg)**Clean Nutra Berberine and Ceylon Cinnamon Supplement Bitter Melon Glucomannan Gymnema Sylvestre Chromium Moringa Milk Thistle Turmeric Apple Cider Vinegar Digestive Enzymes Inositol Pills 90 Capsules**Clean Nutraceuticals**$26.64**337 rev1y ago](https://www.amazon.com/dp/B0FBKVLYG1) [![Type Zero Clean Glucomannan Konjac Root Extract (90 Capsules)(1 800 MG Per Serving) - 30 Servings Non-GMO Gluten Free](https://m.media-amazon.com/images/I/419fZYIvDBL.jpg)**Type Zero Clean Glucomannan Konjac Root Extract (90 Capsules)(1 800 MG Per Serving) - 30 Servings Non-GMO Gluten Free**Type Zero**$14.70**64 rev2y ago](https://www.amazon.com/dp/B0CX2YTKT6) [![BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)](https://m.media-amazon.com/images/I/41BBykx2CJL.jpg)**BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)**BulkSupplements**$22.83**171 rev3y ago](https://www.amazon.com/dp/B0BB8J861P) [![Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules](https://m.media-amazon.com/images/I/41gHUSvH+QL.jpg)**Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules**Brieofood**$9.92**411 rev3y ago](https://www.amazon.com/dp/B0BR8J73KY) [![Best Naturals 2 Pack Konjac Glucomannan Root 2000 mg per Serving - 180 Vegetarian Capsules](https://m.media-amazon.com/images/I/51ng-XuTU7L.jpg)**Best Naturals 2 Pack Konjac Glucomannan Root 2000 mg per Serving - 180 Vegetarian Capsules**Best Naturals**$21.30**415 rev4y ago](https://www.amazon.com/dp/B09S5C5TJ3)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)](https://m.media-amazon.com/images/I/41BBykx2CJL.jpg)**BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)**BulkSupplements**$22.83**4.4★**▲ 116%**](https://www.amazon.com/dp/B0BB8J861P) [![Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules](https://m.media-amazon.com/images/I/41gHUSvH+QL.jpg)**Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules**Brieofood**$9.92**4.2★**▲ 10%**](https://www.amazon.com/dp/B0BR8J73KY) [![Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free](https://m.media-amazon.com/images/I/41JaxdUhJZL.jpg)**Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free**Nutricost**$16.82**4.1★**— 9%**](https://www.amazon.com/dp/B01HQZB4K6) [![Natures Way Herbal Glucomannan from Konjac Root Capsules Promotes Feelings of Fullness* 1 995 mg per 3-Capsule Serving Non-GMO Project Verified Vegan 100 Capsules (Packaging May Vary)](https://m.media-amazon.com/images/I/41VyB3Ks++L.jpg)**Natures Way Herbal Glucomannan from Konjac Root Capsules Promotes Feelings of Fullness* 1 995 mg per 3-Capsule Serving Non-GMO Project Verified Vegan 100 Capsules (Packaging May Vary)**Nature's Way**$12.03**4.0★**— 9%**](https://www.amazon.com/dp/B00020HQYG) [![Nutricost Glucomannan Powder 500 Grams](https://m.media-amazon.com/images/I/417JqGC8avL.jpg)**Nutricost Glucomannan Powder 500 Grams**Nutricost**$24.91**4.2★**— 0%**](https://www.amazon.com/dp/B01EGTY358)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -9.1% search growth over the last 90 days.

13K8KSpike '25Spike '26 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**17%

*“The quality is consistent”*

**Weight Loss**12%

*“Great for weight loss”*

**Nutritional Content**10%

*“Awesome, healthy and perfect in every way”*

**Regulates Digestion**8%

*“it helps a lot with constipation”*

**Value For Money**5%

*“Worth every penny”*

**Efficiency**5%

*“Effective”*

**Advertised Vs Actual Product**5%

*“Works as advertised”*

**Acid Regulator/Stomach Ache Relief**4%

*“So far this is easy to stomach”*

**Vitamin**3%

*“An excellent supplement”*

**Strength**3%

*“Super strong”*

### **What buyers complain about **

**Functionality-Overall**19%

*“Didn't work”*

**Nutritional Content**9%

*“Didnt even suppress appetite as claimed”*

**Weight Loss**7%

*“It didnt fill me up or help with my appetite at all”*

**Dosage**6%

*“which is crazy 4 pills at 1 time per day”*

**Solubility**6%

*“Doesn't dissolve”*

**Acid Regulator/Stomach Ache Relief**5%

*“just made my stomach hurt”*

**Regulates Digestion**5%

*“caused digestion problems even though I made sure to drink plenty of water”*

**Quality-Overall**4%

*“Not reliable product”*

**Value For Money**3%

*“is expensive”*

**Blood Sugar Level**3%

*“just not this in quantity they do really good for my blood sugar”*

### **Top return reasons **

**Acid Regulator/Stomach Ache Relief**40%

**Smell**20%

**Joint Pain**20%

**Functionality-Overall**20%