Is fiber supplement powder profitable to sell on Amazon United States?

The niche generates $1.5M/yr across 44 tracked products. 7 of 8 products launched in the last 360 days are still selling. 90-day search growth is +2.1%. Flapen's verdict: Launch it (65/100).

How competitive is the fiber supplement powder niche?

25 brands and 236 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in fiber supplement powder?

Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Solubility. The return rate is 0.0%.

When does demand for fiber supplement powder peak?

Demand peaks in Oct; the busiest month runs 2.0× the quietest.

What does it cost to enter the fiber supplement powder niche?

Listings span $7.55–$44.12; the average listing price is $21.66 (sweet spot $15–$100). The average incumbent carries 5,338 reviews — the moat a new listing must climb.

fiber supplement powder

Launch it

A $1.5M/yr market growing +2.1% this quarter with returns at 0.0% — clears our launch bar.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$21.66

avg listing price — sweet spot $15–$100

Market size

Great$1.5M

$1.5M/yr · 959K searches

Price range

Great$7.55–$44.12

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

Conversion

Great7.0%

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

Competition

Good45%

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

Brand share

Good70%

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

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+2.1%

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

Review moat

Bad5,337.82

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, fiber supplement powder is a $1.5M/yr Amazon United States market (959K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Oct. Verdict: Launch it — 65/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

fiber supplement powder market data

Units sold / yr: 60K–80K; avg 1,500–2,000/product
Revenue / yr: $1.3M–$1.7M; units × avg price
Conversion rate: 7.0%
Avg BSR: #110
Page quality: 0%
Prime: 98%
Sponsored: 73%
Out of stock: 0.6%
Avg brand age: 66 months
Avg seller age: 144 days

Competition & brand share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

Brands

25 rising

Sellers

236

Top-5 brand share

70%

Top 20: 97%

Top-5 click share

45%

Top 20: 81%

Open market

26%

Benefiber26%
Metamucil24%
Physician's CHOICE8%
NOW Foods7%
Tomorrow's Nutrition4%
KIRKLAND4%

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — +2.1% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 2.0×

Open Trend

Top fiber supplement powder search terms

fiber powder697K/yr +1.6%6.6% conv.
fiber supplement powder85K/yr -11.4%5.3% conv.
fiber drink mix34K/yr +37.3%2.8% conv.
soluble fiber powder33K/yr -5.0%3.8% conv.
fiber drinks22K/yr +26.6%1.6% conv.
daily fiber powder16K/yr +26.4%2.7% conv.
high fiber powder14K/yr +17.2%1.8% conv.
powder fiber12K/yr +15.1%4.0% conv.
dietary fiber powder7K/yr +23.2%1.9% conv.
fiber powder sugar free9K/yr -20.5%5.0% conv.

All search terms

Top fiber supplement 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Benefiber Daily Prebiotic GLP-1 Friendly Fiber Supplement Powder for Digestive Health Unflavored -124 Teaspoons (8.7 Ounces)

Benefiber$12.794.7★8,962 rev

Metamucil 4-in-1 Psyllium Husk GLP-1 Friendly Fiber Supplement Sugar-Free 180 teaspoons Orange Flavored Daily Fiber Powder for Digestive Health made with Plant-Based Psyllium Husk Fiber

Metamucil$33.714.7★35,140 rev

Benefiber Daily Prebiotic GLP-1 Friendly Fiber Supplement Powder for Digestive Health Unflavored - 250 Teaspoons (17.6 Ounces)

Benefiber$21.934.7★9,314 rev

Physicians CHOICE Easy Mix Fiber for GLP-1 Support - No Grit & Sugar Free - Daily Prebiotic Soluble Fiber Powder Supplement - Digestive Health & Regularity - for Women and Men - Unflavored - 7.1oz

Physician's CHOICE$21.534.4★1,689 rev

Metamucil Fiber Supplement Unflavored Clear Mixing Powder No Grit No Sugar Added Plant Based Prebiotic Fiber Supplement Blend for Daily Digestive Health 75 teaspoons

Metamucil$23.574.5★2,401 rev

Newest

by launch date

Benefiber GLP-1 Friendly Fiber Supplement Berry Fusion On the Go Stick Packs 24 Count

Benefiber$13.21168 rev

5mo ago

Natures Truth Prebiotic Fiber Powder Supplement | 3.53 Oz

Nature's Truth$8.3961 rev

7mo ago

Physicians CHOICE Easy Mix Fiber for GLP-1 Support - No Grit & Sugar Free - Daily Prebiotic Soluble Fiber Powder Supplement - Digestive Health & Regularity - for Women and Men - Unflavored - 7.1oz

Physician's CHOICE$21.531,689 rev

9mo ago

6-in-1 Daily Prebiotic Fiber Powder for Gut & Digestive Health GLP-1 Friendly Sugar Free Fiber Supplement Powder with Probiotics Collagen Peptides & Electrolytes - For Women & Men - 7.8 OZ

Venture Pal$19.56301 rev

9mo ago

Belli Welli Daily Fiber Supplement Packets with Collagen Probiotics & Electrolytes | Single Serve Packets for Gut Health Digestion & Debloating | Variety | 10 Count

Belli Welli$19.97353 rev

1y ago

What buyers say about fiber supplement powder

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

What buyers love

Taste-Overall12%

“Delicious taste”

Quality-Overall10%

“Excellent product, very satisfying”

Solubility8%

“Easy to mix”

Nutritional Content6%

“is perfect with your protein shake”

Regulates Digestion6%

“Easy to digest”

Efficiency6%

“Effective”

Flavor5%

“Good orange flavor”

Advertised Vs Actual Product5%

“As described”

Ease Of Use4%

“Easy to get down”

Value For Money4%

“Best value”

What buyers complain about

Taste-Overall17%

“Has a weird taste”

Functionality-Overall6%

“Did not work”

Solubility6%

“Does not disolve”

Value For Money5%

“Price is a little high”

Flavor4%

“The orange is a weird flavor”

Nutritional Content3%

“The ingredients are not healthy”

Ingredients-Overall2%

“Unhealthy ingredients”

Texture/Consistency-Overall2%

“The texture is a little gritty”

Regulates Digestion2%

“Not sure how much they help with digestion”

Acid Regulator/Stomach Ache Relief2%

“I had awful bloating”

Top return reasons

Taste-Overall14%

Functionality-Overall11%

Artificial Sweeteners10%

Ingredients-Overall7%

Advertised Vs Actual Product6%

Value For Money5%

Size-Overall5%

Solubility4%

Sweetness3%

Smell3%

Common questions

Is fiber supplement powder profitable to sell on Amazon United States?: The niche generates $1.5M/yr across 44 tracked products. 7 of 8 products launched in the last 360 days are still selling. 90-day search growth is +2.1%. Flapen's verdict: Launch it (65/100).
How competitive is the fiber supplement powder niche?: 25 brands and 236 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 70% of demand.
What do buyers complain about in fiber supplement powder?: Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Solubility. The return rate is 0.0%.
When does demand for fiber supplement powder peak?: Demand peaks in Oct; the busiest month runs 2.0× the quietest.
What does it cost to enter the fiber supplement powder niche?: Listings span $7.55–$44.12; the average listing price is $21.66 (sweet spot $15–$100). The average incumbent carries 5,338 reviews — the moat a new listing must climb.