Diet Pills Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Diet Pills sales on Amazon US totaled 1,211,000 units in July 2026 (▼ 16.7% vs. the prior month), generating an estimated $29,266,810 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 59.5% of unit volume and 54.7% of revenue, while a typical listing is priced at $28.51. The keyword itself pulled 25,240 Amazon queries over the same period (▼ 6.5% MoM).
Zooming out to the 12-month window ending July 2026, the diet pills Top 50 moved 14,240,700 units and $348,529,840 in cumulative sales — an average of 1,186,725 units and $29,044,153 per month. Monthly throughput topped out at 1,451,000 units in June 2026 and dipped to 768,700 in May 2026, leaving the latest reading 4.8% lower than August 2025.
Diet Pills 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
1.2M
▼ 16.7% MoM
Monthly Revenue 2026/07
$29.3M
▼ 15.8% MoM
Top 10 Market Share 2026/07
59.5%
Diet Pills Market Share & Sales Concentration on Amazon US — July 2026
The most-sold diet pills listing on Amazon US in July 2026 is ASIN B07P5K7DQP (Brand: Pure Encapsulations), which sold 100,000 units at $27.00 apiece — equal to 8.3% of every unit tracked in this report and 11% ahead of the No. 2 listing.
The Top 10 ASINs account for 720,000 units and $15,998,000 in July 2026 — 59.5% of unit volume and 54.7% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Diet Pills' on Amazon
July 2026
Is 59.5% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B07P5K7DQP
Pure Encapsulations Magnesium (Glycinate), 90 Capsules | Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism*, with Magnesium Glycinate
100K
▲ 0.0%vs. prior month
$2.7M
latest month
12-month trend
B00Y8MP4G6
Garden of Life Dr. Formulated Once Daily Women's Probiotics, 50B CFU, 30ct | 50 Billion CFU & Organic Prebiotics – Vaginal Health, Digestive Support, Immune Support, Dairy Free
90K
▼ 10.0%vs. prior month
$2.4M
latest month
12-month trend
B07255MPRN
Sports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
90K
▼ 10.0%vs. prior month
$2.2M
latest month
12-month trend
B079H53D2B
Physician's CHOICE Probiotics 60 Billion CFU - 10 Strains + Organic Prebiotics - Immune, Digestive & Gut Health - Supports Occasional Constipation, Diarrhea, Gas & Bloating - for Women & Men - 30ct
80K
▼ 20.0%vs. prior month
$1.9M
latest month
12-month trend
B000NPYY04
Nature's Bounty Fish Oil Omega 3 Supplements - Supports Heart Health, 1200 Mg Fish Oil, Omega-3, 200 Softgels (Pack of 1)
80K
▼ 11.1%vs. prior month
$919.2K
latest month
12-month trend
B0B6CTYD6S
Magnesium Glycinate 400mg for Sleep, Relaxation, and Recovery, 180 Capsules | Highly Bioavailable Bisglycinate, Magnesium Supplement with 60mg Elemental Magnesium, Gentle on Stomach, Third-Party Tested
70K
▼ 30.0%vs. prior month
$1.2M
latest month
12-month trend
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Best Diet Pills Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Sports Research is the best-performing diet pills brand in July 2026, moving 150,000 units across 2 ASINs for 20.8% of Top 10 volume. Physician's CHOICE follows with 130,000 units (18.1%), ahead of Pure Encapsulations on 100,000 units (13.9%).
Volume is spread across 8 brands, with the top three holding 52.8% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $22.47 to $27.00, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Sports Research
2 ASINs in Top 10
20.8%
Units
150K
Revenue
$3.8M
Avg. price
$25.95
B07255MPRN
$23.95·★4.8·54.6K revsSports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
Units sold90KB07DX89ZHN
$27.95·★4.7·60K revsSports Research® Omega-3 Fish Oil 1250mg from Wild Alaska Pollock, 90 Count | Always Fresh Never Fishy | 690mg EPA 260mg DHA per Softgel · Heart & Brain Health* · MSC Certified Sustainable - 90 Servings
Units sold60K
Physician's CHOICE
2 ASINs in Top 10
18.1%
Units
130K
Revenue
$2.9M
Avg. price
$22.47
B079H53D2B
$24.97·★4.6·144.2K revsPhysician's CHOICE Probiotics 60 Billion CFU - 10 Strains + Organic Prebiotics - Immune, Digestive & Gut Health - Supports Occasional Constipation, Diarrhea, Gas & Bloating - for Women & Men - 30ct
Units sold80KB0C21ZLQNC
$19.97·★4.4·19.3K revsPhysician's CHOICE Digestive Enzymes for Bloating & Digestion - Fast-Acting 16 Enzyme Formula with Organic Prebiotics & Probiotics for Gut & Digestive Health - Meal Time Discomfort Relief - 60 CT
Units sold50K
Pure Encapsulations
1 ASIN in Top 10
13.9%
Units
100K
Revenue
$2.7M
Avg. price
$27.00
B07P5K7DQP
$27.00·★4.7·50.9K revsPure Encapsulations Magnesium (Glycinate), 90 Capsules | Supplement to Support Stress Relief, Sleep, Heart Health, Nerves, Muscles, and Metabolism*, with Magnesium Glycinate
Units sold100K
Trending Diet Pills 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: B004RR1FF6 booked 50K units at $10.97, with ▲ 0.0% MoM change. On the growth side, B001TH7K0G leads positive momentum with ▲ 100.0% MoM growth on 40K units, with B01E3COD8K close behind at ▲ 50.0% MoM on 6K 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.
B004RR1FF6
AZO Cranberry Pills for Women & Men, Urinary Tract Health, 100 Softgels | Cranberry Supplement, Clinically Proven Pacran® To Help Cleanse & Protect Urinary Tract, Bladder Support*, Sugar-free‡, 500mg
Price
$10.97
Rating
4.7
Reviews
63.2K
Latest month sales
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
$24.49
Rating
4.6
Reviews
27.1K
Latest month sales
B01E3COD8K
Nutrex Research Lipo-6 Black Ultra Concentrate | Thermogenic Energizing Fat Burner Supplement, Increase Weight Loss, Energy & Intense Focus |Capsule, 60Count
Unlock to view ASIN details and product titles
Price
$14.99
Rating
4.2
Reviews
5.6K
Latest month sales
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