The Best Protein Powder
Whether your goal is to build muscle or just hit your daily nutrition goals, the best protein powder is easy to mix and enjoyable to drink, all without relying on any unhealthy filler. We surveyed over 4,000 dieticians, consulted renowned fitness and health experts, and tasted 12 certified-safe powders to find our top picks.
The Best Protein Powder
- Jay Robb’s Whey Protein
- Dymatize – ISO100 Natural Chocolate and Vanilla Flavors
Most Protein for Your Buck
- Garden of Life – RAW Organic Protein
Best Vegan Powder
Sports nutrition can be a tricky place for the average consumer to navigate. Since protein powders aren’t regulated by the FDA, manufacturers can get away with a lot of misleading information and marketing hype. We approached our search for the best protein powder like a doctor approaches a patient: “First, do no harm.” We sought out protein powders that are made from high-quality, safe, and third-party verified ingredients, without any artificial additives. And, of course, they had to taste great.
If your idea of the best protein powder is whichever one is the easiest to gulp down, check out Jay Robb's Whey Protein ($24 for 275 grams of protein). It was easily the top-performing powder in our tests, scoring the highest for both taste and texture. Jay Robb’s mixed beautifully, making it an ideal choice if you want something quick for the gym. The only downside is the price; at almost $0.09 per gram of protein, it was the second most expensive product we brought in.
Dymatize ISO100 trades a slight downgrade in taste for a higher protein content per dollar than any other powder we brought in ($30 for 600 grams of protein). If you’re after the best deal, Dymatize will get you the most for your money. But that’s not to say it didn’t make a tasty drink: Testers loved the chocolate flavor, comparing it to chocolate milk on nearly every comment card. The vanilla was a little more polarizing, but that was the case across the board — with the exception of Jay Robb’s vanilla.
If you’re looking for a completely vegan, organic, and GMO-free protein powder, check out Garden of Life - RAW Organic Protein ($38 for 440 grams of protein). While plant-based products tasted significantly worse than the whey proteins, our testers liked Garden of Life better than other options. We’ll be honest, it’s not the most pleasant thing to drink exclusively with water, as we did. However, blending it in with stronger ingredients like a milkshake should take the edge off.
How We Found the Best Protein Powder
We started with 39 protein powders that received a rating of 70 or higher by Labdoor.
The best protein powder isn’t just palatable; it’s also safe for your body. To find high quality protein powders that are honest about their ingredients, we leaned heavily on research from Labdoor, an independent company that tests the accuracy of labeling in supplements and scores those ingredients on how harmful they are to consumers.
Nutritional supplements aren’t regulated by the FDA, so protein powder manufacturers themselves are responsible for ensuring that their products are safe, legal, and compliant with standard FDA regulations. Because of this, some companies cut corners; and if manufacturers don’t have any legal obligation to accurately report what’s in the product, consumers run the risk of serious health issues.
In one especially disconcerting case, Labdoor tested the sodium content in 81 protein powders and found that they contained 70.4% higher sodium content on average than their Supplement Facts labels claimed. Protein powder manufacturers have plenty of incentive to fabricate information like this. More sodium intake can cause water retention and fake the look of quick muscle gains. Labdoor also found that 52% of the powders contained measurable amounts of free-form amino acids, which make protein content look misleadingly high in lab tests without adding much nutritional benefit. BSN True Mass, a protein powder labeled “excellent” by BodyBuilding.com, was an especially flagrant offender, deviating from its claimed protein content by over 40%.
Given that lack of federal oversight, we only considered protein powders that received a rating of 70 or higher from Labdoor, a mark that ensures that all ingredients are accurately listed and safe for consumption.
Every protein powder had to be third-party verified for illegal substances.
No one expects to buy a protein powder that contains illegal stimulants, but since supplements aren’t regulated by the FDA, it’s a very real possibility. Take the case of Oklahoma football player Amani Bledsoe, who was suspended for a year after using protein powder that contained the banned substance clomiphene but didn’t list it on the label. Accidentally consuming a powder with banned substances could be a career-ending mistake, and we didn’t want to take any chances.
“If it is not third party verified, it could have illegal steroids or stimulants in it without you knowing… Athletes using the supplements should know what ingredients are in it and what the risks of those ingredients are.”
We required our contenders to be verified by either the NSF Certified for Sport program or Informed-Choice.org, two of the most respected independent testing organizations around. To earn their seals of approval, companies must submit to ongoing and unannounced inspections of their facilities to ensure that no banned substances end up in their products. The 26 non-verified products we cut aren't necessarily bad products; it just means the company that produces them hasn’t chosen to get them tested. But by using these strict certifications, we could be sure that every product we’re recommending is irrefutably legal.
BioTrust Low Carb Protein Powder, Body Fortress Super Advanced Whey Isolate, Bulletproof Whey Protein, Do Vitamins WonderWhey, Integrated Supplements Whey Isolate Protein, Legion Whey+, MET-Rx Protein Plus, MRM 100% ALl Natural Whey, Muscle Feast Grass Fed Whey Concentrate, Muscle Feast Grass Fed Whey Isolate, Muscle Feast Whey Protein, Muscle Feast Whey Protein Isolate, MusclePharm Casein, MusclePharm MuscleGel Shot, Myprotein Impact Whey Isolate, Myprotein Impact Whey Protein, Myprotein Iso: Pro 97, Nature’s Best Zero Carb Isopure, NOW Foods Whey Protein Isolate, Progenex More Muscle, Pure Protein 100% Natural Whey Protein, Quest Nutrition Protein Powder, SFH – Pure Whey Protein, Spiru-Tein, Sunwarrior Warrior Blend Raw Vegan Protein, Vitamin Shoppe BodyTech Whey Tech Pro 24
We cut out any products with controversial food colorings or artificial sweeteners.
There’s no authoritative research on the effects of substances like food colorings and artificial sweeteners, but the consensus among online fitness and nutrition communities is that you’re best off staying away from them. As an article from the Harvard Medical School puts it, “Whether non-nutritive sweeteners are safe depends on your definition of safe. Studies leading to FDA approval have ruled out cancer risk, for the most part. However, those studies were done using far smaller amounts of diet soda than the 24 ounces a day consumed by many people who drink diet soda. We really don’t know what effect large amounts of these chemicals will have over many years.”
To get a better idea of how experts feel about these additives, we polled over 4,000 registered dietitians. Their response was unanimous (and often much stronger): If possible, artificial sugars and colorings should be completely avoided. Most of the time, they’re simply unnecessary, but some do have potentially harmful side effects like migraines and nausea. Since they’re not adding anything positive, we decided to err on the side of caution.
"Artificial sweeteners are not digested by the body, so they cannot be utilized for energy. Therefore, they don’t provide nutrients to fuel the body during exercise, or help with recovery post-training."
Through our research and expert interviews, we settled on 12 ingredients to avoid in our protein powders:
- Red 40 - Color
Banned in the UK, Red 40 has been linked to promoting hyperactivity in children and immune system tumors in mice.
- Blue 1 and 2 - Color
Blue 1 and 2 have been linked to hyperactivity in a wide variety of artificial food coloring tests.
- Yellow 5 - Color
Yellow 5 has been known to cause urticaria (hives), eczema, angioedema, asthma, and hyperactive behavior, as well as some allergic reactions, especially in individuals with aspirin hypersensitivity.
- Caramel Color - Color
The International Agency for Research on Cancer has reported that 4-mel, a compound found in some types of Caramel Coloring, is “possibly carcinogenic to humans.”
- Aspartame - Artificial Sweetener
Aspartame has been said to induce numerous side effects, those most common being headaches, dizziness, confusion, and vision problems.
- Acesulfame Potassium (Sunett) - Artificial Sweetener
Methylene Chloride (a known carcinogen) is a by-product of the Acesulfame Potassium creation process. The FDA states it does not expect Methylene Chloride to remain in the finished product due to “the multi-step purification process used in the manufacture of ACK and the volatility of methylene chloride,” but avoided it altogether.
- Splenda (Sucralose) - Artificial Sweetener
Although approved by the FDA, there have been reports of adverse reactions to the sweetener, including as a possible migraine trigger. There is also research suggesting that it could harm the immune system.
- Erythritol - Sugar Alcohol
According to a study from the European Journal of Clinical Nutrition, Erythritol can cause cramps, nausea, flatulence, and diarrhea.
- Glycerin (Glycerol) - Sugar Alcohol
Glycerin side effects include: diarrhea, nausea, vomiting, and headache.
- Inositol - Sugar Alcohol
Many side effects are possible. Diarrhea, dizziness, flushing, itching, loss of appetite, nausea, upset stomach, and vomiting could occur if it is ingested in high quantities.
- Polydextrose - Sugar Alcohol
Polydextrose can cause abdominal cramping, bloating and excessive gas.
- Xylitol - Sugar Alcohol
Gas, bloating, and diarrhea can occur with high dosages.
Most studies regarding artificial sweeteners and dyes provide “inconclusive” results, but the controversy surrounding the topic was enough to give us pause. Many common food colorings are classified as a “concern” by the FDA, and the debate regarding the benefits of artificial sweeteners like sucralose and aspartame is ongoing. To err on the safe side, we eliminated any products with these polarizing ingredients.
Cellucor – COR-Performance Whey, Dymatize – Elite 100% Whey Protein (USA), GNC Pro Performance AMP Amplified Wheybolic Extreme 60, Optimum Nutrition (ON) Gold Standard 100% Casein, Optimum Nutrition (ON) Gold Standard 100% Whey, Optimum Nutrition (ON) Platinum Hydro Whey, Optimum Nutrition (ON) Pro Complex, Six Star Pro Nutrition Elite Series Whey Isolate Plus
Finally, we tasted the chocolate and vanilla flavors from our final six protein powders.
That left us with six remaining brands to try for ourselves. We wanted to limit how much our personal flavor preferences biased our testing, so we bought two flavors from each brand: chocolate and vanilla. Since a product’s ingredients change depending on the flavor, we double-checked that each one still passed all of our ingredient cuts — if another flavor sounds better to you, we’d recommend scanning the ingredients first. From there, the only thing that was left to do was round up everyone in the office and start drinking some shakes.
We started by shaking the recommended serving of powder with water (as opposed to milk or other beverages) to make sure the taste wasn’t impacted by outside flavors. Then we had our 11 testers evaluate six different protein powders each: three chocolate and three vanilla. Testers provided a score from one to seven for both taste and texture, along with some brief (but colorful) comments. We were looking for a protein powder that was easy to mix, smooth to drink, and tastier than a typical supplement.
One of our biggest takeaways was that chocolate is a much more pleasant experience than vanilla. On average, our chocolate protein powders scored a 3.95 in taste, compared to only 2.88 for vanilla. If you want something neutral to mix in with smoothie or milkshake, vanilla or unflavored is your best bet. But for no-fuss mixing on the go, chocolate is much easier to get down.
Vega’s vanilla flavor was one of the least popular of the group, with two of our testers going off the scale and awarding it zero and negative three points. One tester disliked it so much, he concluded, “At that point, fitness isn’t worth it.” Optimum Nutrition’s vanilla didn’t fare much better. Testers described it as “watery whipped cream” with “an aftertaste like bad frosting.”
Texture was much less of an issue for most people. Vanilla and chocolate flavors earned nearly identical scores in that category, and most powders dissolved fairly easily. There were a few notable exceptions, though. Vega’s vanilla powder was fine in our testing cups, but when we emptied out the shaker, we found lumps of hardened powder stuck to the bottom that made cleanup harder. Vega’s chocolate has its issues, too, producing the densest liquid of any powder we tested. One tester described it as “syrupy” and another likened it to “choking down medicine”
After half an hour of sipping shakes, we found three protein powders that stood out above the rest. Two of them received our highest scores for taste, while the third was the better of two unpleasant vegan powders we tested. Whatever you want out of your protein powder, one of these will have you covered.
The 12 Protein Powders We Tested
- Allmax - ISONatural Chocolate
- Allmax - ISONatural Vanilla
- Dymatize - ISO100 Natural Chocolate
- Dymatize - ISO100 Natural Vanilla
- Garden of Life - Vanilla
- Garden of Life - Chocolate Cacao
- Jay Robb's Whey Protein - Vanilla
- Jay Robb's Whey Protein - Chocolate
- Optimum Nutrition - Vanilla
- Optimum Nutrition - Chocolate
- Vega Sports Performance Protein - Vanilla
- Vega Sports Performance Protein - Chocolate
Our Picks for the Best Protein Powder
You can count the number of ingredients in Jay Robb’s protein powder on one hand: whey protein isolate, sunflower lecithin, xantham gum, stevia leaf extract, and natural flavors. No artificial colors or sweeteners. No GMOs. No added sugars. On top of all that, it was the best-tasting powder we tried. And while it is one of the more expensive protein powders around at almost $0.09 per gram, we think it’s more than worth it.
Our testers loved Jay Robb’s, ranking the vanilla flavor number one overall in taste tests and chocolate number three. This was especially impressive, considering vanilla flavors were otherwise universally hated by our testers.
Should you worry about GMOs?While the consensus among scientists is that GMOs aren’t harmful to humans, the specific hormone used on cows that produce whey protein, rBGH, is a little more controversial. The evidence is still inconclusive, but Canada and the European Union have both banned its use due to concerns about increased levels of growth hormones and antibiotic-resistant bacteria.
Jay Robb’s tied for first in our tests for texture, too. Its powders mixed up easily in the water, without leaving any off-putting protein particles floating around in our drink. One tester said, “It has a smooth, thin milk consistency. Non-fat milk — water’s burlier twin.” Another even went as far as “almost silky.”
Aside from its taste and texture, Jay Robb’s also goes above and beyond in sourcing its ingredients. It’s one of three powders we tested that doesn’t contain any GMOs, meaning Jay Robb’s takes the extra step to go through small farms to obtain rBGH-free whey. It also earned an 83.4 overall from Labdoor, with an impressive 93 score for nutritional value, making it one of the most accurately labelled protein powders on the market.
If you’re after the most protein for the best price, look no further. Dymatize delivers protein at a little under $0.05 per gram — the cheapest of any product we tested — and it does so without sacrificing taste or ingredient quality. At 600 total grams per $30 bag, Dymatize is your best bet for a great value.
Dymatize Offers the Cheapest Protein
Dymatize was one of the tastiest protein powders in our tests, coming in a close second to Jay Robb’s. Our testers had nothing but good things to say about the chocolate flavor; one remarked that it was “the most like chocolate milk of the three chocolates I’ve tasted” and another compared it to hot chocolate, saying “I could drink this happily.” Like every other brand besides Jay Robb’s, vanilla was a little more polarizing. One tester said it was “very sweet, like marshmallows,” while another concluded that it was “a total bummer… Very artificial vanilla with strong ‘protein’ undertones.” Dymatize was still the second highest-rated vanilla flavor in our tests; it just wasn’t as universally beloved as Jay Robb’s.
Texture drew all-around positive responses, too. The tester who slammed the vanilla Dymatize as “a total bummer” had to admit that it did succeed in one area, calling it “smooth and well-dissolved, but also quite creamy — the best consistency I’ve tested.” Other testers liked its smoothness, too, with one saying it would be “great for those who want to drink their protein fast.” Because it was one of the thinner consistencies we tried, you could even add a little extra power if you’re looking to get in more than its standard 25 grams per serving.
We were also seriously impressed by the quality of Dymatize’s ingredients and the accuracy of its labelling. It earned the highest score on Labdoor of any of the products we tested with an 83.8 overall, narrowly edging out Jay Robb’s. And while its taste wasn’t quite as popular as Jay Robb’s, it was still easy to gulp down and is worth the bargain price.
If you’re on a vegan diet, Garden of Life’s offerings fit the bill. We’ll be honest, it isn’t nearly as tasty as Jay Robb’s or Dymatize, but with its organic and non-GMO certifications, it’s the best plant-based protein powder around.
It was a close call between Garden of Life and the other vegan powder we tested, Vega, but Garden of Life had the edge in a few key areas. It received a slightly higher score overall on Labdoor (82.9 to 80.8), but it had a decidedly wider margin when it came to nutritional value: Labdoor awarded Garden of Life a 95 and Vega just 82. It is also the only product we tested that has been certified organic by the USDA, meaning it has to meet strict production requirements. To top it off, Garden of Life was a slightly better value at just over $0.08 per gram of protein, compared to Vega’s almost $0.09 per gram.
In general, the taste tests weren’t kind to our plant-based offerings. Garden of Life came in second to last, with Vega only a hair behind. Testers compared Garden of Life’s chocolate flavor to chalky water, a chalky melted milkshake, and the last beer in a keg. The vanilla didn’t fare any better: One tester said it tasted like “someone dropped a scoop of cake batter into a glass of water” and another compared it to “vanilla grass.” Nearly every tester also commented on the drink’s unusual thickness compared to other options, making it more inconvenient to mix into milkshake-consistency liquids.
The truth is that plant-based proteins just aren’t as tasty as whey. But there are several things you can do to minimize the flavor, like blending it with other ingredients — banana is a good masker — or adding more liquid to thin it out. And while it was syrupy, we appreciated how Garden of Life dissolved completely without using a blender, making it a good option for your drive home from the gym.
How to Stay Safe with Your Supplements
Protein powder isn’t a replacement for a balanced diet.
In the explicit words of bodybuilder Rich Piana, “Any competitive bodybuilder isn’t getting what they need for a show at GNC; they’re going to the grocery store. Bodybuilders are not made on supplements; they’re made on f*$&ing good, healthy, wholesome food.” Whether you’re a competitive athlete or not, it’s important to treat these products as supplements, and not meal replacements.
Granted, if your full-time job isn’t training for the Olympics, you probably don’t have time to buy yams, bake them for a couple of hours, cool them overnight, and haul them to the gym wrapped in foil every day. For those who can’t prioritize meal planning, protein powders are a great way to bolster overall health – as long as the supplement is consumed as directed. Consider the following words from the International Sports Science Association: “The biggest advantage of protein supplements is not that they can build more muscle; the biggest advantage is convenience.”
Sports nutrition marketing is full of misinformation.
Supplement brands want your money, and they’re notorious for using bogus tactics to get it. Keep an eye out for gimmicks like these:
- Myth: Undenatured whey protein
Fact: This does not exist. The FDA requires that commercially sold milk is pasteurized, so all whey protein has been denatured in some way. Even cold-filtered whey has been flash pasteurized, and that has nothing to do with whether a product is denatured or not.
- Myth: Grass-fed whey
Fact: There are zero studies that conclude that grass-fed whey protein makes better athletes. No protein powder should be valued over another because its whey came from grass-fed cattle.
- Myth: The more protein, the better
Fact: Only 10% to 15% of the calories you need come from protein, and the maximum acceptable protein level for a healthy athlete is 0.9 grams of protein per pound.