Mass Gainer Protein Powder Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Mass Gainer Protein Powder sales on Amazon US totaled 359,100 units in July 2026 (▲ 2.5% vs. the prior month), generating an estimated $13,954,673 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 66.8% of unit volume and 58.8% of revenue, while a typical listing is priced at $51.67. The keyword itself pulled 21,516 Amazon queries over the same period (▲ 1.2% MoM).
Zooming out to the 12-month window ending July 2026, the mass gainer protein powder Top 50 moved 3,455,550 units and $130,138,196 in cumulative sales — an average of 287,963 units and $10,844,850 per month. Monthly throughput topped out at 359,100 units in July 2026 and dipped to 160,700 in May 2026, leaving the latest reading 27.2% higher than August 2025.
Mass Gainer Protein Powder 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
359.1K
▲ 2.5% MoM
Monthly Revenue 2026/07
$14M
▼ 3.1% MoM
Top 10 Market Share 2026/07
66.8%
Mass Gainer Protein Powder Market Share & Sales Concentration on Amazon US — July 2026
The most-sold mass gainer protein powder listing on Amazon US in July 2026 is ASIN B002DYIZEE (Brand: Optimum Nutrition), which sold 80,000 units at $14.68 apiece — equal to 22.3% of every unit tracked in this report and 2.7× the volume of the No. 2 listing.
The Top 10 ASINs account for 240,000 units and $8,203,400 in July 2026 — 66.8% of unit volume and 58.8% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Mass Gainer Protein Powder' on Amazon
July 2026
Is 66.8% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B002DYIZEE
Optimum Nutrition Creatine Monohydrate Powder, Unflavored, 10 Oz | 5g Micronized Creatine Monohydrate Powder Per Serving, Supports Muscle Strength & Power, Easy Mixing, Banned Substance Tested
80K
▲ 14.3%vs. prior month
$1.3M
latest month
12-month trend
B000GISTZ4
Optimum Nutrition Gold Standard Whey Protein Powder, Vanilla Ice Cream, 2LB | 24g 100% Whey Protein Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support & Recovery
30K
▲ 0.0%vs. prior month
$1.4M
latest month
12-month trend
B06ZZ3PJQD
Premier Protein 30g High Protein Powder, 100% Whey, Vanilla, 17 Servings | No Added Sugar, Supports Muscle Health, Soy & Gluten-Free, 1.5 lb
30K
▲ 200.0%vs. prior month
$864.3K
latest month
12-month trend
B002DYIZH6
Optimum Nutrition Gold Standard Whey Protein, Double Rich Chocolate, 2 LB | 24g of 100% Whey Protein Powder Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support
20K
▼ 33.3%vs. prior month
$913.2K
latest month
12-month trend
B099J2SWXV
Dymatize ISO100 Protein Powder, 100% Whey Isolate, Gourmet Vanilla | 25g Protein, Hydrolyzed, Fast-Absorbing, Supports Muscle Health, 5.5g BCAAs, Gluten-Free, 20 Servings, 1.3 lb
20K
▲ 100.0%vs. prior month
$752.4K
latest month
12-month trend
B0CQ3JTR6F
Transparent Labs Grass-Fed Whey Protein - 30 Servings, French Vanilla | Naturally Flavored, Gluten Free Whey Protein Powder with 28g of Protein per Serving & 9 Amino Acids
20K
▲ 0.0%vs. prior month
$1.2M
latest month
12-month trend
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Best Mass Gainer Protein Powder Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Optimum Nutrition is the best-performing mass gainer protein powder brand in July 2026, moving 130,000 units across 3 ASINs for 54.2% of Top 10 volume. Premier Protein follows with 30,000 units (12.5%), ahead of Dymatize on 20,000 units (8.3%).
With 8 brands splitting the Top 10 and 75.0% 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 $27.57 to $39.56, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Optimum Nutrition
3 ASINs in Top 10
54.2%
Units
130K
Revenue
$3.5M
Avg. price
$39.56
B002DYIZEE
$14.68·★4.6·78.4K revsOptimum Nutrition Creatine Monohydrate Powder, Unflavored, 10 Oz | 5g Micronized Creatine Monohydrate Powder Per Serving, Supports Muscle Strength & Power, Easy Mixing, Banned Substance Tested
Units sold80KB000GISTZ4
$49.75·★4.7·48.7K revsOptimum Nutrition Gold Standard Whey Protein Powder, Vanilla Ice Cream, 2LB | 24g 100% Whey Protein Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support & Recovery
Units sold30KB002DYIZH6
$54.25·★4.6·100K revsOptimum Nutrition Gold Standard Whey Protein, Double Rich Chocolate, 2 LB | 24g of 100% Whey Protein Powder Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support
Units sold20K
Premier Protein
1 ASIN in Top 10
12.5%
Units
30K
Revenue
$864.3K
Avg. price
$27.57
B06ZZ3PJQD
$27.57·★4.6·29.3K revsPremier Protein 30g High Protein Powder, 100% Whey, Vanilla, 17 Servings | No Added Sugar, Supports Muscle Health, Soy & Gluten-Free, 1.5 lb
Units sold30K
Dymatize
1 ASIN in Top 10
8.3%
Units
20K
Revenue
$752.4K
Avg. price
$35.49
B099J2SWXV
$35.49·★4.6·20.7K revsDymatize ISO100 Protein Powder, 100% Whey Isolate, Gourmet Vanilla | 25g Protein, Hydrolyzed, Fast-Absorbing, Supports Muscle Health, 5.5g BCAAs, Gluten-Free, 20 Servings, 1.3 lb
Units sold20K
Trending Mass Gainer Protein Powder 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. On the growth side, B006N74O2Y leads positive momentum with ▲ 1400.0% MoM growth on 3K units, with B0BJLBSNVY close behind at ▲ 300.0% MoM on 400 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.
B006N74O2Y
Muscle Milk Genuine Protein Powder, Chocolate, 1.93 Pounds, 13 Servings, 32g Protein, 2g Sugar, Calcium, Vitamins A, C & D, NSF Certified for Sport, Energizing Snack, Packaging May Vary
Price
$23.18
Rating
4.5
Reviews
2.5K
Latest month sales
B0BJLBSNVY
Body Fortress Super Advanced Whey Protein Powder, Cookies N Crème, 1.78 lbs | Flavor: Cookies N Creme, Immune Support, Muscle and Strength Development
Price
$29.98
Rating
4.5
Reviews
2.6K
Latest month sales
B0C6R7WH62
Body Fortress Super Advanced Whey Protein Powder, Vanilla, 3.9 lbs | Flavor: Vanilla, Immune Support, Muscle and Strength Development
Unlock to view ASIN details and product titles
Price
$60.58
Rating
4.6
Reviews
6.7K
Latest month sales
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