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The Best Protein Powders on Amazon, Compared by Label

Updated By the HealthWorld editorial teamHow we pick

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Top picks at a glance

  1. 1
    Optimum Nutrition Gold Standard 100% Whey

    Best overall

    Optimum Nutrition Gold Standard 100% Whey

    Protein 24 g · BCAAs 5.5 g

  2. 2
    Orgain Organic Protein Plant-Based

    Best plant-based

    Orgain Organic Protein Plant-Based

    Protein 21 g · Source Plant blend

  3. 3
    Dymatize ISO100 Hydrolyzed

    Best whey isolate

    Dymatize ISO100 Hydrolyzed

    Protein 25 g · Type Hydrolyzed isolate

See all 6 picks and why ↓

Amazon's protein best-seller list mixes household names with newer clean-label brands. When we checked on October 31, 2026, Transparent Labs, Premier Protein and NAKED Whey were all in the top 10 of Amazon's protein best sellers, so we compared them with three long-running staples, Optimum Nutrition, Dymatize and Orgain, by protein per scoop, protein type, sugar and sweeteners.

Our picks

  1. Optimum Nutrition Gold Standard 100% Whey

    #1Best overall

    Optimum Nutrition Gold Standard 100% Whey

    24 g of protein and 5.5 g of BCAAs per scoop, with whey protein isolate as the primary ingredient. It mixes with just a shaker and comes in a huge flavor range, from Double Rich Chocolate to unflavored.

    Protein 24 gBCAAs 5.5 geBay Full facts →
  2. Orgain Organic Protein Plant-Based

    #2Best plant-based

    Orgain Organic Protein Plant-Based

    21 g of protein from pea, brown rice and chia seed. USDA Organic, vegan, dairy-free and soy-free, and smooth enough for smoothies and baking.

    Protein 21 gSource Plant blendeBay Full facts →
  3. Dymatize ISO100 Hydrolyzed

    #3Best whey isolate

    Dymatize ISO100 Hydrolyzed

    Hydrolyzed whey protein isolate with 25 g of protein per serving and very little fat or sugar, with a light texture many people find easy to digest.

    Protein 25 gType Hydrolyzed isolateeBay Full facts →
  4. Transparent Labs 100% Grass-Fed Whey Protein Isolate

    #4Best clean label

    Transparent Labs 100% Grass-Fed Whey Protein Isolate

    28 g of protein and 1 g of sugar per scoop from grass-fed whey isolate, sweetened with stevia, with no artificial sweeteners, flavors or dyes. In Amazon's protein top 10 when we checked.

    Protein 28 gSugar 1 geBay Full facts →
  5. Premier Protein 100% Whey Protein Powder

    #5Most protein per scoop

    Premier Protein 100% Whey Protein Powder

    30 g of protein, 150 calories and 1 g of sugar per serving from a whey isolate and concentrate blend, made by the famous shake brand. In Amazon's protein top 10 when we checked.

    Protein 30 gCalories 150eBay Full facts →
  6. NAKED Nutrition Naked Whey (Unflavored)

    #6Best unflavored

    NAKED Nutrition Naked Whey (Unflavored)

    Exactly one ingredient, whey protein concentrate from grass-fed cows, with no sweeteners, flavors or colors. 25 g of protein and 120 calories per serving for smoothies, oats and baking.

    Protein 25 gIngredients 1eBay Full facts →
Amazon's live top 100 in Protein

What to look for

The exact flavor and size
Protein listings on Amazon bundle many flavors and sizes, and reviews are often pooled across them. Nutrition Facts can differ by flavor, so check protein and sugar for the one you actually add to your cart.
Sold by Amazon or the brand
Check the 'Ships from' and 'Sold by' lines. Buying from Amazon itself or the brand lowers the risk of counterfeit, resealed or near-expired tubs from unknown sellers.
Cost per gram of protein
Tub prices mislead because scoop sizes differ. Divide the price by the servings, then by the grams of protein per serving. Subscribe & Save, where available, can trim the cost of a powder you use daily.
Third-party testing beats star ratings
Reviews mostly reflect taste and mixability. For an independent check on what's inside, look for NSF Certified for Sport, Informed Choice or Informed Sport on the label, and confirm the product on the certifier's website.
Protein type and sweeteners
Isolate is filtered to remove most of the fat, carbs and lactose; concentrate costs less; plant blends suit vegan diets. If you avoid sucralose, pick a stevia-sweetened powder like Transparent Labs or an unflavored one like NAKED Whey.

Frequently asked questions

What is the best-selling protein powder on Amazon?

Amazon's protein best-seller list changes often and mixes powders with ready-to-drink shakes. When we checked on October 31, 2026, Transparent Labs Grass-Fed Whey, Premier Protein 100% Whey and NAKED Whey were all in the top 10. The best one for you depends on your diet, budget and taste.

Which protein powder on Amazon is best for women or men?

The same powders work for everyone, so choose by diet and goal. For the most protein per scoop, Premier Protein (30 g) and Transparent Labs (28 g) lead our picks; for no dairy, Orgain's plant blend; for no sweeteners at all, NAKED Whey.

Are protein powders on Amazon fake?

Most are genuine, but counterfeit and tampered tubs do turn up with some third-party sellers. Buy from Amazon or the brand, check that the seal is intact and the label matches the brand's website, and look at the best-by date when it arrives.

Does a 'Best Seller' badge on Amazon mean a protein powder is good?

No. It tells you a product sells well in its category, not that it has been tested or suits you. For quality, read the label (protein per scoop, protein type, sugar) and look for third-party certifications.

Sources