fiber capsules
Worth a lookShows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Market size
Great$2.0M$2.0M/yr · 899K searches
Conversion
Great11.0%search→purchase rate — share of searches ending in a sale
Avg price
Great$19.74avg listing price — sweet spot $15–$100
Price range
Great$9.39–$33.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good61%top-5 brand share — brands hold most of the demand
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-1.1%90-day search growth — must beat 0% to launch
Review moat
Bad7,242.71avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, fiber capsules is a $2.0M/yr Amazon United States market (899K searches/yr). The top 5 brands hold 61% of demand. Verdict: Worth a look — 66/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
fiber capsules market data
- Units sold / yr
- 100K–125K
- avg 3,000–4,000/product
- Revenue / yr
- $2.0M–$2.5M
- units × avg price
- Conversion rate
- 11.0%
- Avg BSR
- #75
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 87%
- Out of stock
- 3.0%
- Avg brand age
- 77 months
- Avg seller age
- 146 days
Competition & brand share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
23 rising
Sellers
209
Top-5 brand share
61%
Top 20: 98%
Top-5 click share
50%
Top 20: 90%
Open market
33%
- NOW Foods19%
- Metamucil18%
- MEMBER´S MARK10%
- Quality Choice7%
- GoodMeds7%
- Fibercon5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.2×
Top fiber capsules search terms
- fiber pills320K/yr
- fiber capsules226K/yr
- fiber pills for women45K/yr
- fiber supplement capsules52K/yr
- fiber supplement for men44K/yr
- fiber tablets28K/yr
- fiber pills men29K/yr
- fiber pill25K/yr
- fiber for men22K/yr
- daily fiber capsules20K/yr
Top fiber capsules 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Metamucil Psyllium Husk GLP-1 Friendly Fiber Capsules 300 Capsules 3-in-1 Fiber Supplement Daily Psyllium Husk Fiber Capsules Help Support Digestive Health by Promoting Regularity*
Metamucil$32.994.6★26,964 rev
NOW Foods Supplements Psyllium Husk Caps 500 mg Non-GMO Project Verified Natural Soluble Fiber Intestinal Health* 200 Veg Capsules
NOW Foods$10.494.6★31,631 rev
Members Mark 100% Natural Psyllium Husk Fiber Capsules Digestive Health 400 Count (Pack of 1)
MEMBER´S MARK$16.854.7★1,428 rev
Quality Choice Daily Fiber Capsules for Regularity 160 Count
Quality Choice$9.584.6★2,004 rev
NOW Foods Supplements Psyllium Husk Caps 500 mg Non-GMO Project Verified Natural Soluble Fiber Intestinal Health* 500 Veg Capsules
NOW Foods$19.994.6★31,631 rev
Newest
by launch date
Carlyle Triple Action Fiber Complex | 180 Capsules
Carlyle$9.39472 rev
Benefiber Prebiotic GLP-1 Friendly Fiber Supplement Caplets 84 Count
Benefiber$18.76813 rev
GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble Dietary Colon Support for Women and Men Restore Digestive Regularity and Balance (200 Count)
GoodMeds$10.01438 rev
GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble Dietary Colon Support for Women and Men Restore Digestive Regularity and Balance (800 Count)
GoodMeds$28.36438 rev
MiraFIBER Gummies from The Makers of MiraLAX 8g Per Serving with B Vitamins Metabolism Support Gut Health for Men & Women Prebiotic Fiber Gummies for Adults Mixed Fruit Flavor 72Ct
MiraLAX$14.829,710 rev
Trending
90-day click momentumGoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble Dietary Colon Support for Women and Men Restore Digestive Regularity and Balance (200 Count)
GoodMeds$10.014.5★
NOW Foods Supplements Psyllium Husk Caps 500 mg Non-GMO Project Verified Natural Soluble Fiber Intestinal Health* 500 Veg Capsules
NOW Foods$19.994.6★
Premium Psyllium Husk Fiber Supplement 1450mg 240 Capsules
Sunergetic$21.054.5★
GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble Dietary Colon Support for Women and Men Restore Digestive Regularity and Balance (800 Count)
GoodMeds$28.364.5★
Members Mark 100% Natural Psyllium Husk Fiber Capsules Digestive Health 400 Count (Pack of 1)
MEMBER´S MARK$16.854.7★
What buyers say about fiber capsules
What buyers praise and complain about, mined from review topics.What buyers love
“they taste fresh”
“the overall quality feels consistent”
“Fair price”
“Works consistently”
“Great nutrition supplement”
“AS ADVERTISED”
“Digestive support”
“Chewy”
“Nice orange flavor”
“Ease of use”
What buyers complain about
“No results”
“Not Chewable”
“Disgusting taste”
“The recommended dosage was way too much for me”
“they are expensive”
“I experienced bloating”
“Major bloating”
“If anything I was more hungry to get food”
“Most likely contains lead”
“Terrible side effects”
Top return reasons
Common questions
- Is fiber capsules profitable to sell on Amazon United States?
- The niche generates $2.0M/yr across 31 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.1%. Flapen's verdict: Worth a look (66/100).
- How competitive is the fiber capsules niche?
- 23 brands and 209 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 61% of demand.
- What do buyers complain about in fiber capsules?
- Top complaints mined from reviews: Functionality-Overall, Ease Of Chewing/Swallowing, Taste-Overall. The return rate is 0.0%.
- When does demand for fiber capsules peak?
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- What does it cost to enter the fiber capsules niche?
- Listings span $9.39–$33.81; the average listing price is $19.74 (sweet spot $15–$100). The average incumbent carries 7,243 reviews — the moat a new listing must climb.