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

The niche generates $36K/yr across 10 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +42.8%. Flapen's verdict: Skip it (45/100).

How competitive is the insoluble fiber supplement niche?

9 brands and 27 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 86% of demand.

What do buyers complain about in insoluble fiber supplement?

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

When does demand for insoluble fiber supplement peak?

Demand peaks in Jun–Jul; the busiest month runs 3.1× the quietest.

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

Listings span $13.85–$44.57; the average listing price is $24.34 (sweet spot $15–$100). The average incumbent carries 2,635 reviews — the moat a new listing must climb.

Insoluble Fiber Supplement

Skip it

A small market ($36K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$24.34

avg listing price — sweet spot $15–$100

Price range

Great$13.85–$44.57

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

Growth

Good+42.8%

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

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,634.7

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay86%

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

Conversion

Bad1.9%

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

Competition

Bad81%

top-5 click share — a locked-up shelf

Market size

Bad$36K

$36K/yr · 76K searches

Is insoluble fiber supplement profitable on Amazon?

According to Flapen's Amazon United States niche tracking, insoluble fiber supplement is a $36K/yr Amazon United States market (76K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jun–Jul. Verdict: Skip it — 45/100.

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

insoluble fiber supplement market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–3K; avg 100–250/product
Revenue / yr: $61K–$73K; units × avg price
Conversion rate: 1.9%
Avg BSR: #186
Page quality: 0%
Prime: 90%
Sponsored: 70%
Out of stock: 0.0%
Avg brand age: 77 months
Avg seller age: 161 days

Competition: brands, sellers & click share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

10%

Garden of Life65%
Anthony's6%
Micro Ingredients5%
Physician's CHOICE5%
Vital Nutrients5%
Metamucil4%
Open — no brand owns it (3 brands, 10%)

insoluble fiber supplement demand & seasonality

Weekly Amazon search volume, last 102 weeks — +42.8% search growth over the last 90 days.

Peak months: Jun, Jul · busiest ÷ quietest = 3.1×

Open Trend

Top insoluble fiber supplement search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

fiber blend11K/yr +12.6%1.1% conv.
garden of life super seed beyond fiber5K/yr +38.0%8.7% conv.
insoluble fiber powder7K/yr -30.2%2.7% conv.
garden of life detoxifiber4K/yr +61.7%3.9% conv.
detoxifiber garden of life4K/yr +63.2%3.8% conv.
super seed beyond fiber4K/yr +81.4%2.8% conv.
super seed garden of life4K/yr +82.3%2.4% conv.
fibra insoluble4K/yr +72.7%0.1% conv.
garden of life super seeds4K/yr +86.9%0.6% conv.
garden of life detox fiber4K/yr +94.3%2.0% conv.

All search terms

Top insoluble fiber supplement products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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

Top sellers

by 90-day click share

Garden of Life Super Seed Unflavored Fiber Powder Whole Food Fiber Dietary Supplement with Protein and Omega 3 Vegetarian 600g Powder

Garden of Life$20.104.4★2,562 rev

Garden of Life Organic DetoxiFiber Unflavored Fiber Powder Detox Blend with Chia Alfalfa and Barley for Gut Health Support Gluten Free Psyllium Free Vegan 30 Servings

Garden of Life$17.344.2★1,675 rev

Anthonys Organic Oat Fiber 1.5 lb Gluten Free Non GMO Keto Friendly Product of the USA

Anthony's$13.854.7★10,435 rev

Micro Ingredients Organic Triple Fiber Powder 2lb | Natural Prebiotic to Support Digestive & Gut Health | Soluble Easily Digestible | Unflavored Vegan

Micro Ingredients$36.244.2★3,007 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

Newest

by launch date

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

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

Micro Ingredients Organic Triple Fiber Powder 2lb | Natural Prebiotic to Support Digestive & Gut Health | Soluble Easily Digestible | Unflavored Vegan

Micro Ingredients$36.243,007 rev

7y ago

The Vitamin Shoppe Fiber Blend Natural Source Insoluble and (600 Capsules)

The Vitamin Shoppe$44.57158 rev

8y ago

NOW Foods Supplements Prebiotic Fiber with Fibersol-2 derived from Non-GMO corn Powder 12-Ounce

NOW Foods$13.90547 rev

8y ago

What reviews say buyers love and hate about insoluble fiber supplement

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

What buyers love

Quality-Overall13%

“I have found this brand to always be reliable”

Solubility13%

“Mixes well”

Nutritional Content6%

“Easy and important supplement”

Taste-Overall6%

“Doesnt taste bad”

Advertised Vs Actual Product6%

“As described”

Efficiency5%

“Works well”

Ease Of Use5%

“Easy to use”

Regulates Digestion5%

“improved my digestion”

Blend/Ratio3%

“No trouble mixing”

Value For Money3%

“Worth it”

What buyers complain about

Taste-Overall18%

“It is tasteless”

Functionality-Overall12%

“Not effective”

Value For Money7%

“A little expensive”

Solubility5%

“Does not disolve”

Flavor4%

“No flavor”

Regulates Digestion4%

“It definitely gives digestive issues, very distressing”

Nutritional Content2%

“the fiber isnt good quality”

Side Effects2%

“Also caused bloating and HORRIBLE GAS”

Ingredients-Overall2%

“Contains dangerous ingredients”

Advertised Vs Actual Product2%

“Very deceiving advertising”

Top return reasons

Functionality-Overall20%

Smell15%

Taste-Overall15%

Regulates Digestion10%

Ingredients-Overall5%

Stale/Rotten/Spoiled5%

Value For Money5%