glucomannan
Worth a lookShows low returns (0.0%), but a concentrated shelf (top 5 take 81% of clicks) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Great$17.31avg listing price — sweet spot $15–$100
Conversion
Great8.1%search→purchase rate — share of searches ending in a sale
Price range
Good$9.92–$26.64cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$599K$599K/yr · 426K searches
Review moat
Okay1,987.5avg incumbent reviews — the moat a new listing must climb
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Growth
Bad-9.1%90-day search growth — must beat 0% to launch
Competition
Bad81%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.
All 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free
Nutricost$16.824.1★4,976 rev
NOW Foods Supplements Glucomannan (Amorphophallus konjac) 575 mg Supports Regularity* Healthy Weight Management* 180 Veg Capsules
NOW Foods$14.634.2★3,871 rev
NOW Foods Supplements Glucomannan (Amorphophallus konjac) Pure Powder Supports Regularity* Healthy Weight Management* 8 Ounce (Pack of 1)
NOW Foods$14.044.3★4,985 rev
BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)
BulkSupplements$22.834.4★171 rev
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$12.034.0★4,173 rev
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$26.64337 rev
Type Zero Clean Glucomannan Konjac Root Extract (90 Capsules)(1 800 MG Per Serving) - 30 Servings Non-GMO Gluten Free
Type Zero$14.7064 rev
BulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)
BulkSupplements$22.83171 rev
Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules
Brieofood$9.92411 rev
Best Naturals 2 Pack Konjac Glucomannan Root 2000 mg per Serving - 180 Vegetarian Capsules
Best Naturals$21.30415 rev
Trending
90-day click momentumBulkSupplements.com Glucomannan Capsules - as Konjac Root Extract Glucomannan Supplements Herbal Supplement - Gluten Free 4 Capsules per Serving 240 Count (Pack of 1)
BulkSupplements$22.834.4★
Brieofood Konjac Root Glucomannan 2000 mg per Serving - 180 Vegetarian Capsules
Brieofood$9.924.2★
Nutricost Glucomannan 1 800mg Per Serving 180 Capsules - Natural Fiber Source Non-GMO Gluten Free
Nutricost$16.824.1★
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$12.034.0★
Nutricost Glucomannan Powder 500 Grams
Nutricost$24.914.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -9.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.6×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“The quality is consistent”
“Great for weight loss”
“Awesome, healthy and perfect in every way”
“it helps a lot with constipation”
“Worth every penny”
“Effective”
“Works as advertised”
“So far this is easy to stomach”
“An excellent supplement”
“Super strong”
What buyers complain about
“Didn't work”
“Didnt even suppress appetite as claimed”
“It didnt fill me up or help with my appetite at all”
“which is crazy 4 pills at 1 time per day”
“Doesn't dissolve”
“just made my stomach hurt”
“caused digestion problems even though I made sure to drink plenty of water”
“Not reliable product”
“is expensive”
“just not this in quantity they do really good for my blood sugar”