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

The niche generates $755K/yr across 8 tracked products. 90-day search growth is +0.5%. Flapen's verdict: Skip it (49/100).

How competitive is the fiber powder supplement niche?

3 brands and 55 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in fiber powder supplement?

Top complaints mined from reviews: Taste-Overall, Flavor, Value For Money. The return rate is 0.1%.

When does demand for fiber powder supplement peak?

Demand peaks in Feb–Mar–Apr–May–Jun; the busiest month runs 2.6× the quietest.

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

Listings span $12.79–$40.66; the average listing price is $23.68 (sweet spot $15–$100). The average incumbent carries 4,656 reviews — the moat a new listing must climb.

fiber powder supplement

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible13.7%

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

Avg price

Incredible$23.68

avg listing price — sweet spot $15–$100

Price range

Great$12.79–$40.66

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

Market size

Good$755K

$755K/yr · 233K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+0.5%

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

Review moat

Bad4,655.5

avg incumbent reviews — the moat a new listing must climb

Competition

Bad92%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, fiber powder supplement is a $755K/yr Amazon United States market (233K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar–Apr–May–Jun. Verdict: Skip it — 49/100.

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

fiber powder supplement market data

Units sold / yr: 30K–40K; avg 3,000–4,000/product
Revenue / yr: $710K–$947K; units × avg price
Conversion rate: 13.7%
Avg BSR: #158
Page quality: 0%
Prime: 88%
Sponsored: 50%
Out of stock: 0.0%
Avg brand age: 78 months
Avg seller age: 157 days

Competition & brand share

The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

92%

Top 20: 100%

Open market

Metamucil89%
Benefiber6%
Quality Choice5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +0.5% search growth over the last 90 days.

Peak months: Feb, Mar, Apr, May, Jun · busiest ÷ quietest = 2.6×

Open Trend

Top fiber powder supplement search terms

metamucil unflavored26K/yr +30.1%11.5% conv.
metamucil powder unflavored32K/yr +11.5%13.5% conv.
metamucil clear23K/yr -4.4%11.6% conv.
unflavored metamucil20K/yr -22.8%10.2% conv.
metamucil unflavored powder15K/yr +22.9%12.2% conv.
clear fiber powder15K/yr -2.0%5.7% conv.
metamucil clear fiber blend14K/yr -2.8%16.4% conv.
metamucil no added sweeteners8K/yr +87.7%11.5% conv.
clear fiber9K/yr +17.5%4.5% conv.
unflavored metamucil powder12K/yr +16.6%11.0% conv.

All search terms

Top fiber powder supplement 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 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

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

Metamucil Daily Psyllium Husk Powder Supplement Sugar-Free Powder 4-in-1 Fiber for Digestive Health No Added Sweetener 114 teaspoons

Metamucil$29.884.3★3,270 rev

Metamucil Psyllium Husk Powder Unflavored Original Texture with Sugar 114 Servings 4-in-1 Fiber Supplement Daily Psyllium Husk Fiber Powder Help Support Digestive Health by Promoting Regularity*

Metamucil$29.804.5★3,766 rev

Quality Choice Clear Prebiotic Fiber Supplement Powder for Digestive Health - Tasteless Non-Thickening Formula - 62 Servings 8.6 Ounces (248g) Ideal for Adults & Children 6 & Up Daily Fiber Powder

Quality Choice$13.504.4★822 rev

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

Newest

by launch date

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$23.572,401 rev

2y ago

Quality Choice Clear Prebiotic Fiber Supplement Powder for Digestive Health - Tasteless Non-Thickening Formula - 62 Servings 8.6 Ounces (248g) Ideal for Adults & Children 6 & Up Daily Fiber Powder

Quality Choice$13.50822 rev

2y ago

Metamucil Daily Psyllium Husk Powder Supplement Sugar-Free Powder 4-in-1 Fiber for Digestive Health No Added Sweetener 114 teaspoons

Metamucil$29.883,270 rev

9y ago

Metamucil Psyllium Husk Powder Unflavored Original Texture with Sugar 114 Servings 4-in-1 Fiber Supplement Daily Psyllium Husk Fiber Powder Help Support Digestive Health by Promoting Regularity*

Metamucil$29.803,766 rev

10y ago

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

Benefiber$21.939,314 rev

10y ago

What buyers say about fiber powder supplement

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

What buyers love

Efficiency10%

“Effective; keeps me regular”

Solubility8%

“Mixes easily”

Advertised Vs Actual Product8%

“As advertised”

Quality-Overall8%

“Excellent product”

Taste-Overall8%

“Great taste”

Nutritional Content7%

“Its great addition to my protein drink”

Regulates Digestion6%

“helps with digestion”

Value For Money5%

“The price is affordable”

Flavor4%

“Good flavor”

Ease Of Use3%

“Easy to Use”

What buyers complain about

Taste-Overall19%

“Has zero taste”

Flavor7%

“Has a terrible taste when it says unflavored”

Value For Money7%

“Very expensive”

Solubility5%

“Will not dissolve”

Functionality-Overall4%

“Didn't work on me”

Ingredients-Overall3%

“its shocking they choose to use a dirt cheap ingredient like this in the formula”

Texture/Consistency-Overall3%

“The texture is super off-putting”

Nutritional Content3%

“wish it was more affordable. especially with it being so high in gluten”

Side Effects2%

“Caused nausea and I threw up after taking”

Regulates Digestion2%

“Not sure how it works for constipation”

Top return reasons

Taste-Overall14%

Functionality-Overall14%

Ingredients-Overall14%

Solubility9%

Compatibility-Overall9%

Size-Overall9%

Cough Relief5%

Strength5%

Advertised Vs Actual Product5%

Blood Sugar Level5%

Common questions

Is fiber powder supplement profitable to sell on Amazon United States?: The niche generates $755K/yr across 8 tracked products. 90-day search growth is +0.5%. Flapen's verdict: Skip it (49/100).
How competitive is the fiber powder supplement niche?: 3 brands and 55 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in fiber powder supplement?: Top complaints mined from reviews: Taste-Overall, Flavor, Value For Money. The return rate is 0.1%.
When does demand for fiber powder supplement peak?: Demand peaks in Feb–Mar–Apr–May–Jun; the busiest month runs 2.6× the quietest.
What does it cost to enter the fiber powder supplement niche?: Listings span $12.79–$40.66; the average listing price is $23.68 (sweet spot $15–$100). The average incumbent carries 4,656 reviews — the moat a new listing must climb.