Is glucomannan powder profitable to sell on Amazon United States?

The niche generates $105K/yr across 11 tracked products. 90-day search growth is -5.8%. Flapen's verdict: Skip it (48/100).

How competitive is the glucomannan powder niche?

8 brands and 17 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 91% of demand.

What do buyers complain about in glucomannan powder?

Top complaints mined from reviews: Value For Money, Solubility, Nutritional Content. The return rate is 0.0%.

When does demand for glucomannan powder peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the glucomannan powder niche?

Listings span $14.04–$29.78; the average listing price is $20.38 (sweet spot $15–$100). The average incumbent carries 1,234 reviews — the moat a new listing must climb.

glucomannan powder

Skip it

A concentrated shelf (top 5 take 84% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Price range

Great$14.04–$29.78

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

Avg price

Great$20.38

avg listing price — sweet spot $15–$100

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Conversion

Good5.6%

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

Review moat

Good1,233.55

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$105K

$105K/yr · 91K searches

Growth

Bad-5.8%

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

Brand share

Bad91%

top-5 brand share — brand-locked demand

Competition

Bad84%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United States niche tracking, glucomannan powder is a $105K/yr Amazon United States market (91K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 48/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

glucomannan powder market data

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $122K–$163K; units × avg price
Conversion rate: 5.6%
Avg BSR: #530
Page quality: 0%
Prime: 100%
Sponsored: 73%
Out of stock: 0.0%
Avg brand age: 63 months
Avg seller age: 168 days

Competition & brand share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

NOW Foods26%
Nutricost25%
PURE ORIGINAL INGREDIENTS16%
BulkSupplements15%
Best Naturals9%
Modernist Pantry6%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top glucomannan powder search terms

glucomannan powder42K/yr -11.5%8.6% conv.
konjac powder36K/yr -9.0%4.0% conv.
konjac jelly powder8K/yr +34.6%1.0% conv.
konjac root powder5K/yr +6.2%5.5% conv.

All search terms

Top glucomannan powder 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.

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

All 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

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

Nutricost Glucomannan Powder 500 Grams

Nutricost$24.914.2★1,178 rev

Konjac Gum Powder (8 oz) Glucomannan Konjac Powder Cornstarch Substitute Thickener

PURE ORIGINAL INGREDIENTS$15.074.2★187 rev

BulkSupplements.com Glucomannan Powder - from Konjac Root Extract Fiber Supplement - Gluten Free 2g per Serving 100g (3.5 oz) (Pack of 1)

BulkSupplements$16.454.3★608 rev

Best Naturals 2 Pack Konjac Glucomannan Root 1 Pound - 2000 mg per Serving - (Total 2 Pound)

Best Naturals$29.064.1★250 rev

Newest

by launch date

BAILINHOU konjac tofu powder Pure konjac flour speciflcally formulated for cooking konjac tofu 17.63oz/500g Primary Glucomannan powder

BAILINHOU$29.7821 rev

3y ago

Best Naturals 2 Pack Konjac Glucomannan Root 1 Pound - 2000 mg per Serving - (Total 2 Pound)

Best Naturals$29.06250 rev

4y ago

Konjac Gum Powder (8 oz) Glucomannan Konjac Powder Cornstarch Substitute Thickener

PURE ORIGINAL INGREDIENTS$15.07187 rev

5y ago

Konjac Gum (1 lb) Glucomannan Konjac Powder Cornstarch Substitute Thickener

PURE ORIGINAL INGREDIENTS$25.66187 rev

5y ago

Jim Willie Konnyaku Jelly Powder 10g (3 Packs)

Jim Willie$14.4449 rev

8y ago

What buyers say about glucomannan powder

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

What buyers love

Nutritional Content17%

“Awesome, healthy and perfect in every way”

Quality-Overall13%

“The quality is consistent”

Weight Loss10%

“Great for weight loss”

Regulates Digestion9%

“it helps a lot with constipation”

Thickness6%

“This is the perfect thickener”

Solubility4%

“found it dissolves best using an immersion blender”

Strength4%

“Super strong”

Caffeine Content4%

“add to my coffee every day”

Ease Of Chewing/Swallowing3%

“Easy on the stomach”

Value For Money3%

“Great priced seems like good quality”

What buyers complain about

Value For Money14%

“is expensive”

Solubility10%

“I thought about my coffee and over the couple of years I've been adding this powder, sometimes it made a pudding at the bottom of my cup and others, it seemed to dissolve completely”

Nutritional Content7%

“less effect in beefing up the amount of stool or the smooth operation of colon. does not help periodicity”

Taste-Overall7%

“which makes me doubt the freshness”

Quality-Overall5%

“Garbage product”

Acid Regulator/Stomach Ache Relief5%

“It made me sick to my stomach”

Functionality-Overall5%

“Does Not Work”

Size-Overall3%

“The pills are enormous much larger than standard supplements”

Advertised Vs Actual Product3%

“See picture. Labeling misleading”

Material Quality3%

“Must be made of plastic”

Top return reasons

Acid Regulator/Stomach Ache Relief100%

Common questions

Is glucomannan powder profitable to sell on Amazon United States?: The niche generates $105K/yr across 11 tracked products. 90-day search growth is -5.8%. Flapen's verdict: Skip it (48/100).
How competitive is the glucomannan powder niche?: 8 brands and 17 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 91% of demand.
What do buyers complain about in glucomannan powder?: Top complaints mined from reviews: Value For Money, Solubility, Nutritional Content. The return rate is 0.0%.
When does demand for glucomannan powder peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the glucomannan powder niche?: Listings span $14.04–$29.78; the average listing price is $20.38 (sweet spot $15–$100). The average incumbent carries 1,234 reviews — the moat a new listing must climb.