9 Best Protein Powders of 2026

Thorne's whey is a whey protein isolate, so each 100-calorie scoop carries 21 g of protein with 3 g of sugar and 0.5 g of fat. Thorne lists 2.2 g of leucine per serving and adds a bromelain and papain blend to help digest the protein. The main reason it ranks first is testing: the product is NSF Certified for Sport, which Thorne describes as batch testing for label accuracy and for nearly 300 substances banned by major athletic bodies. That matters to college and pro athletes and to anyone who wants an outside check on what they eat every day. At $65 for 30 scoops, or $58.50 on subscription, the cost per serving sits in the middle of this list. The vanilla formula is not the simplest: it uses carboxymethylcellulose and xanthan gums, cane juice sugar and stevia. The page also carries a California Proposition 65 warning for lead. Bulk tubs and single-serve packets are both sold.

Naked Whey is built around one idea: the unflavored version has a single ingredient, grass-fed whey protein, from small non-GMO dairy farms with no rBGH or rBST. Each serving gives 25 g of protein and 5.9 g of BCAAs, and Naked says the whey is cold-processed without acid or bleach. On testing, the page says the contents are certified by NSF for accuracy and purity, including checks for harmful levels of heavy metals and pesticides. That is a strong claim, though it is not the same as the NSF Certified for Sport mark on the Thorne, Momentous and Vega pages. The 5 lb bag holds 76 servings for $139.99 on a one-time order, or $111.99 on autoship, and smaller 2 lb and 1 lb bags cost more per serving. Flavored versions add chocolate, vanilla, strawberry and chocolate peanut butter. The trade-off for the short label is a plain taste and mixing that can need a shaker or blender.

Legion's whey is a whey concentrate made with Avonlac 282, from American cows never treated with rBST. Each serving has 20 g of protein, 9 g of essential amino acids and 4.4 g of BCAAs, and it is sweetened and flavored with naturally derived ingredients such as stevia, allulose and monk fruit, with no added sugars or artificial dyes. Legion says the powder is lab-tested for purity and accuracy and independently certified by Labdoor to contain no heavy metals, microbes, allergens or banned substances, and that it is made in NSF-certified, FDA-inspected facilities. The facility claim is different from a product certification, so read it as a manufacturing standard. The one-time price is $54.99 for 30 servings, or $1.83 a serving, the lowest on our list, and a first subscription order drops to $38.49. A 100% money-back guarantee lowers the risk of trying a flavor. The main drawback is the 20 g scoop, so heavier lifters may need more than one.

Momentous sells this as its everyday whey: a grass-fed isolate sourced from European dairy farms, cold-processed and micro-filtered to keep sugar, fat and lactose low. Each serving gives 20 g of protein, and Momentous adds ProHydrolase enzymes, which it says help break down protein and reduce stomach upset. The formula has no gums, fillers or artificial sweeteners, and it is NSF Certified for Sport, the same mark carried by Thorne and Vega on this list. Flavor choice is wide, with chocolate, vanilla, strawberry, unflavored, spiced chai and mint chocolate, and it comes in 25 and 12 serving jars plus travel packs. The catch is price. A 25-serving jar costs $69.99 one-time, about $2.80 a serving, or $52.49 on subscription. A 30-day money-back guarantee and HSA/FSA eligibility help. If cost is not the deciding factor, this is as strong as the Thorne isolate on testing and cleaner on ingredients.

Gold Standard 100% Whey is the long-running best seller from Optimum Nutrition, and the current formula lists whey protein isolate as the main source in a whey blend. Each serving has 24 g of protein and 5.5 g of naturally occurring BCAAs, and the powder is gluten free. Optimum Nutrition describes it as banned substance tested, though the product page does not name the program or lab, which makes it harder to check than the NSF marks elsewhere on this list. Its strength is convenience: more than 15 flavors and easy mixing with only a glass and spoon, so it suits an office drawer or a gym bag. The US store showed $74.49 for the 2 lb tub of 29 servings, or $2.56 a serving, which is high for a whey blend; a 73-serving 5 lb tub is also sold, and subscriptions take 20% off. It is also stocked by many retailers, where prices vary.

ISO100 is Dymatize's top whey, made with hydrolyzed protein that is pre-broken down for fast absorption, and filtered to remove excess lactose, carbs, fat and sugar. A 30 g scoop of Gourmet Vanilla carries 25 g of protein in 110 calories with 1 g of sugar, plus 5.5 g of BCAAs and 2.6 g of leucine, the highest leucine figure published by any brand on this list. Dymatize says it mixes easily in water, milk or milk alternatives and calls it banned substance tested, without naming the program on the product page. The flavor list is long at 15, including Fruity Pebbles, Dunkin' and Baskin-Robbins tie-ins, and sizes run from 20 and 24 servings to 3 lb and 5 lb tubs. Dymatize's own site does not show a price; its buy button sends shoppers to retailers, so we could not verify a US price and scored value conservatively. Check the price per serving at your retailer before buying.

Vega renamed Vega Sport Premium Protein to Protein + Recovery, and the formula is aimed at training days. Each scoop has 30 g of plant protein from pea, pumpkin seed and organic sunflower seed, with 12 g of essential amino acids and 5 g of glutamic acid, plus tart cherry and probiotics. It is NSF Certified for Sport, vegan and gluten free, which makes it the only plant protein on our list with that certification and a natural pick for vegan athletes who face testing. Vega suggests one scoop in 12 fl oz of cold water or a non-dairy drink, and it can go into smoothies or recipes. Flavors are vanilla, chocolate, mocha, berry and peanut butter, sold in a large 19-serving tub, an XL 44-serving tub or 12 single servings. The large tub costs $64.99, about $3.42 a serving, which is the main reason it ranks seventh. The XL tub lowers the cost per serving.

Orgain's original plant-based powder is built for everyday use rather than sport. Each serving has 21 g of vegan protein and 7 g of prebiotic and fiber, with no added sugar, and it is gluten free and non-GMO. Orgain says it seeks USDA organic certification for its products and avoids soy ingredients and carrageenan. It is pitched as a pantry ingredient as much as a shake: Orgain suggests adding it to pancakes and baking. Five flavors are sold in 1 lb and 2 lb canisters, and three of them contain small amounts of caffeine; Creamy Chocolate Fudge has about 8 to 9 mg per serving from cocoa. The 2.03 lb canister costs $37.99 on a one-time order, the lowest tub price on our list, or $32.29 with Subscribe & Save. The reason it ranks eighth is testing: the product page does not name any third-party testing for contaminants or banned substances, which is the focus of this list.

Ghost built its whey around flavor partnerships, and the line-up shows it: Cinnabon, Coffee Ice Cream, Milk Chocolate, Chocolate Chip Cookies, Cereal Milk and cereal milk versions with Trix, Cocoa Puffs, Lucky Charms and peanut butter. The powder is a 100% whey protein blend with natural digestive enzymes, and Ghost lists 25 g or more of protein per serving. A 2 lb bag costs $54.99 on a one-time order, or $41.24 with a subscription that takes 25% off and adds a free packet to the first order. For this list, though, the gap is testing. The Ghost Whey product page does not name third-party testing or a certification, and it carries a California Proposition 65 warning for lead. Ghost may test its products, but we only count what the product page documents. The Cinnabon flavor we checked was also out of stock, so availability can vary by flavor.