Protein Powder Brands

1. The Major Protein Powder Brands at a Glance

The table below summarizes fourteen protein supplement brands that most US shoppers will see on store shelves or online. Price tiers are relative, based on typical cost per 25 g of protein at usual retail prices for each brand's core products, and they move with sales, tub size and where you buy. The certification column describes each brand's general posture, not a promise about any particular product. Certification is granted product by product, so always confirm the exact product and flavor in the certifier's own database before relying on it.

Two patterns are worth noticing before you read the profiles. First, consolidation: Glanbia owns both Optimum Nutrition and Isopure, BellRing Brands owns both Dymatize and Premier Protein, and Nestlé Health Science owns Garden of Life and holds a majority stake in Orgain. Shared ownership does not mean shared formulas or factories, but it does mean that the brand on the tub is often a product line inside a much larger company rather than an independent business. Where we were not confident of current ownership, the table says so rather than guessing, because supplement brands are bought and sold often.

Second, the brands differ much more in how they approach certification than in the quality of their basic whey. A well-made whey isolate from any established brand provides roughly the same protein and leucine per gram. What separates the brands is whether they put their products through independent testing, how openly they disclose ingredients, and how consistent their quality has been over time. That is why the trust and certification sections at the end of this guide matter more than any single brand profile. For a product-by-product table with protein per serving and sweeteners, see our protein powder comparison.

2. Whey-First Brands: Optimum Nutrition, Dymatize, Isopure and Myprotein

These four brands built their reputations on whey, and between them they account for a large share of the protein powder sold in gyms, supplement stores and online. All four sell good products at their core. The differences are in price, flavor range and how far each pushes into isolate and specialty formulas.

Optimum Nutrition

Optimum Nutrition is the default protein powder brand for a large share of gym-goers, and its Gold Standard 100% Whey is one of the best-selling protein powders in the world. Gold Standard is a blend of whey isolate, concentrate and peptides that provides about 24 g of protein per scoop, per the label at the time of writing. The brand is owned by Glanbia, the Irish nutrition company, and many Gold Standard Whey flavors have carried Informed Choice certification. Buyer consensus over many years rates the flavor range and mixability highly. It is rarely the cheapest option per 25 g of protein, but frequent sales on large tubs often bring it close to budget territory. The range also includes casein, plant protein and the Serious Mass gainer.

Dymatize

Dymatize is best known for ISO100, a hydrolyzed whey isolate that provides about 25 g of protein per scoop with very little lactose, fat or carbohydrate. It is a common pick for people who track macros closely or find whey concentrate hard on the stomach. Dymatize is owned by BellRing Brands, which also owns Premier Protein, and many ISO100 flavors have carried Informed Choice certification. The brand's Elite 100% Whey is a cheaper blend for those who do not need an isolate. ISO100 sits in the mid tier on cost per 25 g of protein, a small premium over blends that is worth paying mainly if lactose is a problem for you.

Isopure

Isopure, also owned by Glanbia, has specialized in whey isolate for decades and is known for its Zero Carb and Low Carb powders, which provide about 25 g of protein per scoop with little or no carbohydrate. That makes it a frequent choice for people on low-carb diets or anyone who wants as close to pure protein as possible. Its unflavored version is popular for mixing into food. Isopure sits in the mid tier on price. Check the certifier databases for its current listings rather than assuming a status either way.

Myprotein

Myprotein is a UK-based brand owned by THG and is best known for low prices and near-constant discount codes. Its Impact Whey Protein is a whey concentrate that provides roughly 20 to 22 g of protein per serving depending on region and flavor, and its Impact Whey Isolate and Clear Whey lines cover other niches. On cost per 25 g of protein it is often among the cheapest mainstream options, especially when bought on sale. Some Myprotein products have been listed with Informed Sport or Informed Choice, but coverage varies by product and market, so check the database for the specific item. For a ranked look at the best options in this category, see our best whey protein powder roundup.

3. Testing-Led Brands: Transparent Labs, Thorne, Klean Athlete, Naked and NOW

A second group of brands competes less on flavor and price and more on what is, and is not, in the tub. Some lean on independent sports certification, some on minimal ingredients, and some on publishing their own test results. These brands tend to be popular with drug-tested athletes and with shoppers who care most about contaminants.

Transparent Labs

Transparent Labs built its brand around label disclosure: no proprietary blends, no artificial sweeteners or colors, and published third-party lab results for its products. Its 100% Grass-Fed Whey Protein Isolate provides about 28 g of protein per scoop, per the label, and is sweetened with stevia. It sits in the premium tier on cost per 25 g of protein. Published lab results from a brand are useful, but they are not the same thing as an independent certification program that audits facilities and retests products, so check NSF and Informed Sport databases if a formal listing matters to you.

Thorne

Thorne is a supplement company with a clinical, practitioner-oriented reputation and a long list of products that carry NSF Certified for Sport, including its Whey Protein Isolate, which provides about 21 g of protein per scoop. That certification is the main reason Thorne is popular with professional and collegiate athletes subject to drug testing. It is a premium brand on price, and you are paying primarily for the testing and the brand's consistency rather than for more protein per gram.

Klean Athlete

Klean Athlete exists essentially for tested athletes: its sports line is built around NSF Certified for Sport. Klean Isolate is an unflavored whey isolate that provides about 20 g of protein per serving with no sweetener, which makes it easy to add to food or flavored drinks. It is a premium-priced, no-frills option. Because the brand's whole pitch is certification, it is still worth verifying the specific product in the NSF database, a habit that applies to every brand on this page.

Naked Nutrition

Naked Nutrition sells minimal-ingredient powders, most famously Naked Whey, an unflavored grass-fed whey concentrate with a single ingredient on the label and about 25 g of protein in a two-scoop serving. The brand also sells casein, pea, rice and egg proteins along the same lines, and lightly flavored versions for people who want some taste. It says its products are third-party tested; check the named certifier databases for specific listings. Naked sits in the mid tier on price and is a natural fit for anyone avoiding sweeteners. Our best unflavored protein powder guide covers this style in more depth.

NOW Foods

NOW Foods is a long-running, privately held supplement company known for budget-friendly basics and for emphasizing its own in-house laboratory testing. Its NOW Sports line includes whey isolate, plant proteins and simple single-ingredient powders, and many NOW Sports products have carried Informed Sport certification; verify the specific product before you rely on it. On cost per 25 g of protein NOW is often in the budget-to-mid range, which makes it one of the better values for anyone who wants a certified product without paying premium prices.

4. Plant-Focused Brands: Garden of Life, Orgain and Vega

Plant-based protein is where brand choice matters most for safety, because independent testing has repeatedly found higher average levels of heavy metals such as lead and cadmium in plant powders than in whey. Plants absorb these metals from soil, and organic farming does not prevent it. That makes product-level testing more valuable here than anywhere else in the category, and it is the main reason we weight certification heavily in our best plant-based protein powder guide.

Garden of Life

Garden of Life is owned by Nestlé Health Science and is known for organic, non-GMO and plant-based supplements. Its Sport Organic Plant-Based Protein provides about 30 g of protein per serving from pea and other plant sources and carries NSF Certified for Sport, which is unusual and valuable in the plant category. The brand's Raw Organic Protein line is popular for general use. Garden of Life sits in the premium tier on cost per 25 g of protein.

Orgain

Orgain, in which Nestlé Health Science holds a majority stake, is one of the most widely available plant protein brands in the US, with heavy presence at warehouse clubs and mass retailers. Its Organic Protein Plant-Based Powder provides about 21 g of protein per two-scoop serving from pea, brown rice and chia, sweetened with erythritol and stevia. The serving is large relative to its protein, so its protein percentage is lower than most whey products. It is a good, affordable choice for smoothies and casual use rather than for the highest protein per scoop. Check the certifier databases for current listings.

Vega

Vega is a plant-based sports nutrition brand founded by former professional triathlete Brendan Brazier. Its Vega Sport Premium Protein provides about 30 g of protein per serving from a blend of pea, pumpkin seed, sunflower and alfalfa protein, sweetened with stevia. The brand also sells everyday protein and greens products. Vega sits in the premium tier on price. Some Vega Sport products have been marketed with sports certification over the years; confirm current status in the certifier's database rather than relying on older packaging.

Across all three, the same advice holds. Compare plant brands on protein per serving and protein percentage, because serving sizes vary widely, and look for named third-party testing that includes heavy metals. Our guide to whether protein powder is safe explains what the contaminant testing actually measures and who should be most careful.

5. Protein Shake Brands and Lifestyle Brands: Premier Protein and Ghost

Not every protein brand is built around tubs of powder. Some of the biggest protein shake brands are known mainly for ready-to-drink bottles and cartons, and some of the fastest-growing powder brands sell flavor and lifestyle as much as protein. Both can be good choices if you know what you are paying for.

Premier Protein

Premier Protein, owned by BellRing Brands, is one of the best-selling protein shake brands in US mass retail. Its ready-to-drink shakes provide 30 g of protein with about 160 calories and 1 g of sugar per carton, per the label, and are sold in multipacks at warehouse clubs and grocery stores. The brand also sells a protein powder. On a cost per 25 g basis, Premier's shakes are among the more affordable ready-to-drink options, though powder is almost always cheaper per gram of protein than any shake. For comparisons across ready-to-drink options, see our best protein drink roundup.

Ghost

Ghost is a lifestyle-led brand best known for bold packaging and licensed flavor collaborations with well-known cookie and cereal brands. Its Ghost Whey Protein is a whey blend that provides about 25 g of protein per scoop, per the label. Buyer consensus rates its flavors highly, which is a real advantage if taste is what keeps you consistent, and it is the main reason the brand shows up in our best tasting protein powder guide. It sits in the mid-to-premium tier on cost per 25 g of protein; check the certifier databases for specific product listings.

The honest assessment of lifestyle brands is that you are paying partly for branding and flavor, and that is fine if it gets you to drink the shake. The protein inside a well-made whey blend from Ghost or any other established brand is not meaningfully different from a cheaper competitor's. Run the cost per 25 g calculation, check the ingredient list and certification, and decide whether the flavor is worth the difference to you.

Ready-to-drink shakes deserve one extra note. They are convenient, but they often contain thickeners, sweeteners and more additives than a simple powder, and their cost per 25 g of protein is typically well above that of the same brand's powder. They are best treated as a convenience for busy days rather than as the main way to hit a daily protein target.

6. What Makes a Protein Supplement Brand Trustworthy

Dietary supplements in the US do not need approval from the Food and Drug Administration before sale. Brands must follow current good manufacturing practices and label products truthfully, but no one independently checks each batch unless the brand pays a certifier to do so. That puts the burden of trust on the brand and, ultimately, on you. A handful of habits separate the protein supplement brands worth trusting from those that are merely well marketed.

The first is independent certification on the products you actually buy. NSF Certified for Sport, Informed Sport and Informed Choice each involve testing by an outside organization, and NSF also audits manufacturing facilities. A brand that certifies most of its line is spending real money on accountability. The second is full disclosure: no proprietary blends that hide how much of each protein source is in the scoop, a full amino acid profile on the label or website, and clear allergen statements. Brands that publish their own lab results go a step further, though self-published results are not a substitute for an independent program.

The third is a clean track record. Check whether a brand has faced recalls, FDA warning letters or lawsuits over mislabeled protein content, including the wave of amino spiking cases in the mid-2010s in which some brands were accused of inflating protein figures with cheap amino acids. A single old issue that was fixed is not disqualifying, but a pattern is. The fourth is restraint in marketing: brands that rely on words like clinically proven or pharmaceutical grade without evidence, or that promise dramatic results from protein alone, are telling you something about how they operate.

Finally, a brand being big is not the same as a brand being trustworthy, and a brand being small is not a red flag on its own. Some of the most consistently certified products come from mid-sized specialists, and some of the most heavily advertised brands certify only a fraction of their lines. Judge the brand by its habits, then judge the product by its label. Our ranked picks on the main best protein powder guide apply exactly these criteria, and our how we test page explains the method.

7. House Brands and Costco's Kirkland Signature

Warehouse clubs, big-box stores and online retailers increasingly sell protein products under their own labels. Costco's Kirkland Signature is the best-known example; the label has covered protein products such as bars and ready-to-drink shakes, and what is available varies by region and changes over time. Other retailers have their own store-brand protein powders and shakes as well.

House-brand protein is made by contract manufacturers, and retailers do not always say which one. That is not a problem in itself, since many name brands also use contract manufacturers, but it means you have less information about who made the product and how. The same rules apply as for any brand: read the ingredient list, check protein per serving against the serving size, look for a named third-party certification and verify it in the certifier's database. If you cannot find any certification or published testing, weigh that against the price.

The main appeal of house brands is cost, and on cost per 25 g of protein they can be very competitive. Warehouse clubs also sell name brands such as Orgain, Premier Protein and Optimum Nutrition in large packs, often at prices that bring premium products down a tier. Before buying a house brand on price alone, run the cost per 25 g calculation on the name-brand multipacks on the next shelf; the gap is sometimes smaller than it looks.

If you are a drug-tested athlete, house brands are usually the wrong place to look, simply because they rarely carry NSF Certified for Sport or Informed Sport. For everyone else, a house-brand whey or plant protein with a clear label and a sensible price is a reasonable choice, especially for smoothies and baking where flavor matters less. For a shortlist that prioritizes contaminant testing over price, see our best clean protein powder roundup.

8. Brand-Level vs Product-Level Certification

The most common misunderstanding about protein powder certification is that it applies to brands. It does not. NSF Certified for Sport, Informed Sport and Informed Choice certify specific products, and sometimes specific flavors or sizes within a product line. A brand can have one flavor of whey certified and the rest not, or a certified sports line next to an uncertified everyday line. When a brand describes itself as certified, the accurate reading is that some of its products are.

The programs also differ in how they test. Informed Sport tests every batch of a certified product before release, Informed Choice tests products bought from retail on a regular blind schedule, and NSF Certified for Sport combines product testing with facility audits and ongoing retesting. All three screen for substances banned in sport and check manufacturing quality. None of them is a rating of taste, value or nutrition, and none replaces your own reading of the label.

Organic, non-GMO and grass-fed claims sit in a different category altogether. They describe how ingredients were produced, not what the finished product was tested for. An organic plant protein can still contain naturally occurring heavy metals, and a grass-fed whey can still be mislabeled. These claims can be meaningful to you for other reasons, but they are not a substitute for independent contaminant and banned-substance testing.

A few groups should take extra care regardless of brand. Anyone with kidney disease, anyone who is pregnant or breastfeeding, anyone with a milk, soy or other food allergy, and anyone taking medications that might interact with added ingredients should talk to a doctor or registered dietitian before choosing a protein powder. This guide is about brands and products, not medical advice. For everyone else, the practical approach is simple: shortlist brands with good habits, compare their products on cost per 25 g of protein and label quality, and verify certification at the product level.