Whey Isolate Protein Powder Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Whey Isolate Protein Powder sales on Amazon US totaled 448,000 units in July 2026 (▼ 4.9% vs. the prior month), generating an estimated $22,877,580 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 51.3% of unit volume and 47.5% of revenue, while a typical listing is priced at $59.60. The keyword itself pulled 40,835 Amazon queries over the same period (▲ 12.6% MoM).
Zooming out to the 12-month window ending July 2026, the whey isolate protein powder Top 50 moved 4,503,400 units and $211,976,190 in cumulative sales — an average of 375,283 units and $17,664,683 per month. Monthly throughput topped out at 471,000 units in June 2026 and dipped to 213,600 in May 2026, leaving the latest reading 16.5% higher than August 2025.
Whey Isolate 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
448K
▼ 4.9% MoM
Monthly Revenue 2026/07
$22.9M
▼ 7.6% MoM
Top 10 Market Share 2026/07
51.3%
Whey Isolate Protein Powder Market Share & Sales Concentration on Amazon US — July 2026
The most-sold whey isolate protein powder listing on Amazon US in July 2026 is ASIN B00J074W7Q (Brand: Orgain), which sold 60,000 units at $31.98 apiece — equal to 13.4% of every unit tracked in this report and 2.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 230,000 units and $10,872,700 in July 2026 — 51.3% of unit volume and 47.5% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Whey Isolate Protein Powder' on Amazon
July 2026
Is 51.3% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B00J074W7Q
Orgain Organic Vegan 21g Protein Powder, Vanilla Bean, 2.03 lb | Plant based protein, 4g prebiotic fiber, no added sugar or lactose, non-GMO, for shakes & smoothies
60K
▼ 14.3%vs. prior month
$1.8M
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
B0CQ32D39X
Transparent Labs Grass-Fed Whey Protein - 30 Servings, Milk Chocolate | Naturally Flavored, Gluten Free Whey Protein Isolate 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 Whey Isolate Protein Powder Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Optimum Nutrition is the best-performing whey isolate protein powder brand in July 2026, moving 70,000 units across 4 ASINs for 30.4% of Top 10 volume. Orgain follows with 60,000 units (26.1%), ahead of Transparent Labs on 40,000 units (17.4%).
With 5 brands splitting the Top 10 and 73.9% 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 $31.98 to $74.14, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Optimum Nutrition
4 ASINs in Top 10
30.4%
Units
70K
Revenue
$4M
Avg. price
$74.14
B000GISTZ4
$49.75·★4.7·48.6K 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 sold20KB000GISU1M
$96.28·★4.7·48.6K revsOptimum Nutrition Gold Standard Whey Protein Powder, Vanilla Ice Cream, 5LB | 24g 100% Whey Protein Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support & Recovery
Units sold10KB000QSTBNS
$96.28·★4.7·29.9K revsOptimum Nutrition Gold Standard Whey Protein, Extreme Milk Chocolate, 5 LB | 24g of 100% Whey Protein Powder Per Serving, with BCAAs, Gluten Free, Banned Substance Tested, Easy Mixing, Muscle Support
Units sold10K
Orgain
1 ASIN in Top 10
26.1%
Units
60K
Revenue
$1.8M
Avg. price
$31.98
B00J074W7Q
$31.98·★4.5·62.1K revsOrgain Organic Vegan 21g Protein Powder, Vanilla Bean, 2.03 lb | Plant based protein, 4g prebiotic fiber, no added sugar or lactose, non-GMO, for shakes & smoothies
Units sold60K
Transparent Labs
2 ASINs in Top 10
17.4%
Units
40K
Revenue
$2.4M
Avg. price
$59.99
B0CQ32D39X
$59.99·★4.7·1.9K revsTransparent Labs Grass-Fed Whey Protein - 30 Servings, Milk Chocolate | Naturally Flavored, Gluten Free Whey Protein Isolate Powder with 28g of Protein per Serving & 9 Amino Acids
Units sold20KB0CQ3JTR6F
$59.99·★4.5·1.7K revsTransparent 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
Units sold20K
Trending Whey Isolate 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. Specifically, one ASIN forced its way in: B00G6QHYZ6 booked 10K units at $108.99, with ▲ 0.0% MoM change. On the growth side, B0C6R7WH62 leads positive momentum with ▲ 250.0% MoM growth on 7K units, with B06ZZ3PJQD close behind at ▲ 200.0% MoM on 30K 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.
B00G6QHYZ6
Dymatize ISO100 Protein Powder, 100% Whey Isolate, Gourmet Vanilla | 25g Protein, Hydrolyzed, Fast-Absorbing, Supports Muscle Health, 5.5g BCAAs, Gluten-Free, 76 Servings, 5 lb
Price
$108.99
Rating
4.6
Reviews
20.6K
Latest month sales
B0C6R7WH62
Body Fortress Super Advanced Whey Protein Powder, Vanilla, 3.9 lbs | Flavor: Vanilla, Immune Support, Muscle and Strength Development
Price
$60.48
Rating
4.6
Reviews
6.7K
Latest month sales
B06ZZ3PJQD
Premier Protein 30g High Protein Powder, 100% Whey, Vanilla, 17 Servings | No Added Sugar, Supports Muscle Health, Soy & Gluten-Free, 1.5 lb
Unlock to view ASIN details and product titles
Price
$27.57
Rating
4.6
Reviews
29.3K
Latest month sales
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