Fiber One Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Fiber One sales on Amazon US totaled 834,000 units in July 2026 (▼ 4.5% vs. the prior month), generating an estimated $14,247,120 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 50.4% of unit volume and 64.5% of revenue, while a typical listing is priced at $13.13. The keyword itself pulled 30,005 Amazon queries over the same period (▲ 9.3% MoM).
Zooming out to the 12-month window ending July 2026, the fiber one Top 50 moved 8,859,050 units and $147,015,730 in cumulative sales — an average of 738,254 units and $12,251,311 per month. Monthly throughput topped out at 873,000 units in June 2026 and dipped to 513,000 in May 2026, leaving the latest reading 14.6% higher than August 2025.
Fiber One Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
834K
▼ 4.5% MoM
Monthly Revenue 2026/07
$14.2M
▼ 2.6% MoM
Top 10 Market Share 2026/07
50.4%
Fiber One Market Share & Sales Concentration on Amazon US — July 2026
The most-sold fiber one listing on Amazon US in July 2026 is ASIN B003CT2YQY (Brand: Metamucil), which sold 60,000 units at $31.12 apiece — equal to 7.2% of every unit tracked in this report.
The Top 10 ASINs account for 420,000 units and $9,195,000 in July 2026 — 50.4% of unit volume and 64.5% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Fiber One' on Amazon
July 2026
Is 50.4% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B003CT2YQY
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
60K
▲ 20.0%vs. prior month
$2.1M
latest month
12-month trend
B07GPGQJR4
Amazon Basics Soft Fiber Gummies for Digestive Health and Regularity, Orange, Lemon & Strawberry Flavors, 90 Count, Pack of 1 (Previously Solimo)
60K
▲ 20.0%vs. prior month
$561.6K
latest month
12-month trend
B0BDP24LP4
Metamucil Fiber Gummies for Adults, No Sugar Added Orange Flavor, 5g Prebiotic Plant Based Fiber Supplement Blend, 120 Count
60K
▲ 0.0%vs. prior month
$1.5M
latest month
12-month trend
B001TH7K0G
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*
40K
▲ 100.0%vs. prior month
$1.2M
latest month
12-month trend
B00CX3ASFE
Benefiber Prebiotic Fiber Supplement Powder, Unflavored, 250 Teaspoons | Plant-based Prebiotic Fiber Powder, Sugar-Free, Dissolves Clear and Tasteless, GLP-1 Support for Digestive Health
40K
▲ 0.0%vs. prior month
$925.6K
latest month
12-month trend
B0FYZ9QQ9Z
Physician's CHOICE Fiber Gummies for GLP-1 Support - No Sugar Added & Vegan - Raspberry Lemon - Natural Chicory Root Prebiotic Fiber Gummy - Digestive Health & Regularity for Women & Men - 60CT
40K
▲ 0.0%vs. prior month
$620.8K
latest month
12-month trend
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Best Fiber One Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Metamucil is the best-performing fiber one brand in July 2026, moving 190,000 units across 4 ASINs for 45.2% of Top 10 volume. Amazon Basics follows with 60,000 units (14.3%), ahead of Benefiber on 40,000 units (9.5%).
With 7 brands splitting the Top 10 and 69.0% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $9.74 to $24.44, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Metamucil
4 ASINs in Top 10
45.2%
Units
190K
Revenue
$5.3M
Avg. price
$24.44
B003CT2YQY
$31.12·★4.7·35.4K revsMetamucil 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
Units sold60KB0BDP24LP4
$24.95·★4.6·17.5K revsMetamucil Fiber Gummies for Adults, No Sugar Added Orange Flavor, 5g Prebiotic Plant Based Fiber Supplement Blend, 120 Count
Units sold60KB001TH7K0G
$25.13·★4.6·27.1K revsMetamucil, 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*
Units sold40KB000052Y5Q
$16.57·★4.7·9K revsMetamucil 4-in-1 Psyllium Husk GLP-1 Friendly Fiber Supplement, Sugar-Free, 72 teaspoons, Orange Flavored, Daily Fiber Powder for Digestive Health, made with Plant-Based Psyllium Husk Fiber
Units sold30K
Amazon Basics
1 ASIN in Top 10
14.3%
Units
60K
Revenue
$561.6K
Avg. price
$9.74
B07GPGQJR4
$9.74·★4.5·18.3K revsAmazon Basics Soft Fiber Gummies for Digestive Health and Regularity, Orange, Lemon & Strawberry Flavors, 90 Count, Pack of 1 (Previously Solimo)
Units sold60K
Benefiber
1 ASIN in Top 10
9.5%
Units
40K
Revenue
$925.6K
Avg. price
$22.98
B00CX3ASFE
$22.98·★4.7·9.5K revsBenefiber Prebiotic Fiber Supplement Powder, Unflavored, 250 Teaspoons | Plant-based Prebiotic Fiber Powder, Sugar-Free, Dissolves Clear and Tasteless, GLP-1 Support for Digestive Health
Units sold40K
Trending Fiber One Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B001TH7K0G booked 40K units at $25.13, with ▲ 100.0% MoM change. On the growth side, B0831CG6D5 leads positive momentum with ▲ 25.0% MoM growth on 5K units, with B003CT2YQY close behind at ▲ 20.0% MoM on 60K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B001TH7K0G
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*
Price
$25.13
Rating
4.6
Reviews
27.1K
Latest month sales
B0831CG6D5
Raisin Nut Bran Cereal, High Fiber Cereal, Made with Whole Grain, 20.8 oz | Crispy Flakes, Crunchy Almonds, and Sweet Covered Raisins, Contains 38g Whole Grain Per Serving, High Fiber
Price
$5.46
Rating
4.8
Reviews
1.8K
Latest month sales
B003CT2YQY
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
Unlock to view ASIN details and product titles
Price
$31.12
Rating
4.7
Reviews
35.4K
Latest month sales
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