---
title: "Glucomannan — $599K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/glucomannan"
last_updated: "2026-08-12T01:13:25.172Z"
locale: en
meta:
description: "Niche score 54/100 · $599K/yr market · 426K searches/yr. A concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $599K/yr market · 426K searches/yr. A concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Glucomannan — $599K/yr Amazon US Niche (2026) - Flapen"
---
# **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 5% 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
According to Flapen's Amazon United States niche tracking, glucomannan is a $599K/yr Amazon United States market (426K searches/yr). The top 5 brands hold 89% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **glucomannan market data**
- **Units sold / yr**
- **40K–50K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$692K–$866K**
- units × avg price
- **Conversion rate**
- **8.1%**
- **Avg BSR**
- **#628**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **64 months**
- **Avg seller age**
- **159 days**
## **Competition & brand share**
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%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**7%**
- Nutricost35% - NOW Foods33% - BulkSupplements8% - Nature's Way7% - Brieofood5% - Best Naturals4% - Open — no brand owns it (3 brands, 7%)
## **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×
[**Open Trend **](https://flapen.com/research/us/health-household/glucomannan/trend)
## **Top glucomannan search terms**
- **glucomannan**266K/yr-12.4%9.9% conv. - **glucomannan for weight loss**51K/yr+6.9%7.7% conv. - **glucomannan capsules**35K/yr-16.5%11.7% conv. - **glucomanano**14K/yr+20.0%2.2% conv. - **now glucomannan**8K/yr+9.1%19.2% conv. - **glucomanano para bajar de peso**6K/yr+9.1%2.3% conv. - **now foods glucomannan**5K/yr+23.4%15.3% conv. - **konjac glucomannan**9K/yr-13.3%9.3% conv. - **glucomannan supplements**7K/yr-35.6%7.0% conv. - **nutricost glucomannan capsules**2K/yr+154.3%19.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/glucomannan/search-terms)
## **Top glucomannan products on Amazon**
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**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**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)**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)**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)**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**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**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)**BulkSupplements**$22.83**171 rev3y ago](https://www.amazon.com/dp/B0BB8J861P) [**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**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)**BulkSupplements**$22.83**4.4★**▲ 116%**](https://www.amazon.com/dp/B0BB8J861P) [**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**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)**Nature's Way**$12.03**4.0★**— 9%**](https://www.amazon.com/dp/B00020HQYG) [**Nutricost Glucomannan Powder 500 Grams**Nutricost**$24.91**4.2★**— 0%**](https://www.amazon.com/dp/B01EGTY358)
**~~View all trending →~~**
## **What buyers say about glucomannan**
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%
## **Common questions**
- **Is glucomannan profitable to sell on Amazon United States?**
- The niche generates $599K/yr across 12 tracked products. 90-day search growth is -9.1%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the glucomannan niche?**
- 9 brands and 26 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in glucomannan?**
- Top complaints mined from reviews: Functionality-Overall, Nutritional Content, Weight Loss. The return rate is 0.0%.
- **When does demand for glucomannan peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the glucomannan niche?**
- Listings span $9.92–$26.64; the average listing price is $17.31 (sweet spot $15–$100). The average incumbent carries 1,988 reviews — the moat a new listing must climb.
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