
Sep 14, 2025 10:00 AM
The Best Protein Powders, Tested and Tasted
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Protein powder is my secret ingredient. The best protein powders are an easy boost to any of your go-to recipes, from smoothies to muffins to morning waffles. I rely on it to fill in the nutritional gaps when my meals aren’t winning any wellness awards. While the recommended daily allowance for protein is just 0.36 grams per pound of body weight, that’s the minimum to avoid deficiency, not the sweet spot for optimal health. Depending on how active you are or your dietary needs, your daily protein recommendation may increase. For more on this, check out How Much Protein Do I Need?
What was once the territory of gym bros trying to bulk up has exploded into the mainstream. Protein powders are on every shelf, in every form and flavor, and for every dietary preference. Whether you’re plant-based, a picky eater, or need a quick nutrient boost, protein powder is your fast pass. But with so many options, fads, and a never-ending list of additives, it’s easy to grab the wrong one. I’ve sifted through the market to find the best of the best protein powder. (As with any dietary supplement, please consult a medical professional or registered dietitian before consuming protein powder.)
For more powders, tonics, and elixirs, check out our guides to the Best Greens Powders, Best Electrolyte Powders, and Best Mushroom Gummies.
Updated September 2025: I’ve added Dymatize ISO100, Little Ripples kids protein powder, and Be Well by Kelly, and updated information and specs of all picks.
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Best Overall
Optimum Nutrition
Gold Standard 100% Whey Protein Powder
Optimum Nutrition’s Gold Standard Whey has been a longtime favorite among gym rats. It’s affordable, widely available, and tastes good. It delivers 24 grams of protein per serving, sourced from a blend of whey isolate, concentrate, and peptides. The vanilla ice cream flavor has been my go-to for three years. I use it in smoothies, but I love it even more for baking—I like to swap a couple of scoops for some of the flour in banana bread to give it a protein boost without tasting chalky. Reviewer Louryn Strampe loves the banana cream, which she swears tastes like a yellow Laffy Taffy.
While it’s not the “cleanest” protein powder on the market—there are options with fewer additives—it’s reassuring to know the Clean Label Project gave the vanilla ice cream flavor its stamp of approval earlier this year, confirming it tested free of arsenic, lead, cadmium, and mercury.
Protein Source Protein blend (whey protein isolate, whey protein concentrate, hydrolyzed whey protein) Protein per Serving 24 grams Flavors 20+, including rocky road, double rich chocolate, and strawberry banana WIRED/TIREDLargeChevron WIRED- More than 20 flavor options
- 24 grams of protein per serving size
- A versatile blend of isolate, concentrate, and hydrolyzed whey for fast absorption
- The vanilla ice cream flavor is certified by the Clean Label Project
TIRED- Some flavors contain artificial sweeteners.
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Best Tasting
Dymatize
ISO100 Whey Protein Powder Isolate
I’m very picky when it comes to chocolate milk, but I’ll easily down a Dymatize Performance Protein Shake, and it even packs five more grams of protein per serving than ISO100. That speaks volumes about Dymatize’s flavor game. While fan-favorite Fruity Pebbles leans a little too cereal milk for my taste, there are over 14 sweet flavors to choose from, including Dunkin’ collabs and classics like fudge brownie, gourmet vanilla, and strawberry, so you’re likely to find one that hits the spot.
Unfortunately, there’s no unflavored option, and flavor this good obviously comes with some additives: natural and artificial flavors like salt, sucralose, and soy lecithin. It’s not the cleanest label out there, but it’s easy on the stomach and tastebuds. A solid choice for beginners who care more about taste.
Protein Source Hydrolyzed whey protein Protein per Serving 25 grams Flavors 14, including Fruity Pebbles, Dunkin’ glazed donut, and cinnamon cereal WIRED/TIREDLargeChevron WIRED- 14 flavor options
- Includes 5.5 grams of BCAAs
- Only 2 grams of carbohydrates and 110 calories per serving size
TIRED- Contains natural and artificial flavors
- Contains sucralose, soy lecithin, and steviol glycosides (stevia
- Low quantity in container
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Best Vegan
Orgain
Organic Vegan Protein Powder
Orgain’s Organic Protein Powder blends pea, brown rice, chia, and mung bean proteins to hit all nine essential amino acids. It’s USDA-certified organic, kosher, and delivers 21 grams of protein, plus 4 grams of fiber and prebiotics for a little digestive support. With about 15 grams of carbs per serving, it leans higher carb than some plant-based competitors, but that also makes it more filling—ideal if you need something to hold you over between meals.
I’ve tested my fair share of vanilla proteins, and Orgain’s vanilla bean flavor is one of the better ones. It’s smooth, not overly sweet, and blends up surprisingly creamy despite being dairy-free. While the formula is free from artificial sweeteners, most flavors include erythritol and gums, which can cause digestive issues for some. Some flavors, like birthday cake, sneak up to 450 milligrams of sodium per serving, which is 20 percent of your daily limit. The iced coffee flavor comes with 60 milligrams of caffeine.
Protein Source Organic protein blend (organic pea protein, organic brown rice protein, organic mung bean protein, organic chia seed) Protein per Serving 21 grams Flavors 11, including birthday cake, fruity cereal, and peanut butter WIRED/TIREDLargeChevron WIRED- Plant-based
- USDA-certified organic and kosher
- Free from artificial sweeteners
TIRED- Most flavors include erythritol and gums
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Best for Women
Ritual
Protein Daily Shake 18+
Ritual prides itself on transparency, offering a traceable supply chain, so you know exactly what’s going into your protein shake. The Protein Daily Shake 18+ is crafted from organic yellow field peas, grown and harvested exclusively in North America. By sourcing from regenerative farms, Ritual minimizes heavy metal contamination risks and reduces its carbon footprint. The vanilla flavor is handcrafted using vanilla extract sourced from Madagascar. No surprise that it’s certified by the Clean Label Project and won the organization’s Purity Award.
Ritual’s pea protein is enhanced with L-methionine, rounding out the amino acid profile, with eight grams of essential amino acids and four grams of branched-chain amino acids (BCAAs) per serving. It’s a clean option: soy-free, gluten-free, vegan, and free from GMOs, stevia, sugar alcohols, and artificial flavors or colors. While I haven’t tested Ritual’s Pregnancy & Postpartum Daily Shake, it’s worth noting it delivers 250 milligrams of choline per serving to support increased dietary needs during pregnancy and lactation.
Protein Source Organic yellow field peas Protein per Serving 20 grams Flavors Vanilla WIRED/TIREDLargeChevron WIRED- Soy-free, gluten-free, and vegan
- Free from GMOs, stevia, sugar alcohols, and artificial ingredients
- Certified by the Clean Label Project
TIRED- More expensive than its competitors
- Not the tastiest
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Best for Athletes
Promix
Whey Isolate Protein Powder (Unflavored)
When it comes to easy-to-digest protein, Promix Grass-Fed Whey Isolate stands out. Micro-filtered to contain less than 1 gram of lactose, it’s designed for sensitive stomachs. Each serving delivers 30 grams of protein, 6.6 grams of BCAAs, and 14.2 grams of essential amino acids. Promix also nails texture; with less than one percent non-GMO sunflower lecithin, this natural emulsifier helps dissolve the powder in water and milk without any grittiness. I’ve tossed it into shakes and muffins—the protein shakes weren’t my favorite, but the baked goods turned out delicious.
The brand also sells protein puff bars (15 grams of protein) in flavors like blueberries & cream, snickerdoodle, and mint chocolate. While I found them too chalky, my fiancé loved them, so they might be worth trying if you’re looking for snackable protein.
Protein Source Grass-fed whey protein isolate Protein per Serving 30-31 grams Flavors 4, including french vanilla, strawberry milk, and dutch chocolate WIRED/TIREDLargeChevron WIRED- 30 grams of protein per serving size
- Ideal for sensitive stomachs
TIRED- Texture is chalky
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Best for Sensitive Stomachs
Momentous
Grass Fed Whey Protein Isolate Powder
If you’re picky about what goes into your protein powder, Momentous checks a lot of boxes. The company sources its whey from European dairy farms, where regulations ensure the cows are grass-fed and free from hormones, steroids, and rBST. The whey is processed using cold microfiltration to preserve its amino acid profile, and it includes ProHydrolase, an enzyme blend meant to boost digestion and absorption. Momentous is NSF Certified for Sport and Informed Sport, making it a top pick for athletes. It’s free from fillers, gums, and refined sugar, though it does use natural flavors.
With 20 grams of protein per serving, it’s great for most people, but bodybuilders and lifters may prefer a powder with a higher protein content. The macros are lean—just three grams of carbs (two from fiber, which helps with satiety) and 1.5 grams of fat, likely from the sunflower lecithin that improves mixability. Taste-wise, it’s not the most pleasant on its own. If you like to drink protein straight with water, you might find this one a little rough. I prefer to blend it into a fruit smoothie.
Protein Source Grass-fed whey protein isolate Protein per Serving 20 grams Flavors 3, including unflavored, vanilla, and chocolate WIRED/TIREDLargeChevron WIRED- Only 2 grams of carbohydrates and 90 calories per serving size
- Free from fillers, gums, and refined sugar
- Certified by Informed Sport and NSF Certified for Sport
TIRED- Contains natural flavors
- Not the tastiest
- Fewer flavor options than competitors
- Only 20 grams of protein per serving size
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Best Collagen-Based
Vital Proteins
Vital Performance™ Protein Powder
Collagen-based powders aren’t the best for muscle growth, but they’ve gained a loyal following for their supposed benefits for hair, skin, and joint health. Vital Proteins’ Vital Performance Protein Powder sets itself apart with an NSF Certified for Sport credential, meaning it’s been third-party tested for safety and label accuracy.
This formula combines milk protein isolate with bovine-sourced collagen peptides, making it a gentler option for those with lactose intolerance since it contains minimal to no milk sugar. (It’s still a milk byproduct, so steer clear if you have a dairy allergy.) The powder dissolves well in water or milk alike without clumps. It works well in smoothies and even holds up in baking if you want to sneak some protein into your pancakes.
Protein Source Milk protein isolate and bovine collagen peptides Protein per Serving 25 grams (including 10 grams of collagen) Flavors 4, including vanilla, strawberry, and cold brew coffee WIRED/TIREDLargeChevron WIRED- Boosted with collagen
- NSF Certified for Sport credential
TIRED- Fewer flavor options than competitors
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Best for Paleo
Be Well by Kelly
Chocolate Grass-Fed Beef Protein Powder
Beef protein isolate is made from cow tissue that has been filtered and processed into powder. Whey is just as effective at building muscles and is cheaper, but Be Well by Kelly’s protein powder is a good option for those who follow a stricter Paleo diet or are dairy- or whey-free.
There are only three ingredients—organic cacao powder, beef protein isolate, and monk fruit sweetener. It packs 24 grams of protein per scoop and is a much finer powder than other protein powders I’ve tried. It is also a complete protein that has been third-party tested. The main reason I like it, however, is the taste. I do find it difficult to dissolve it plain in water. But with a little peanut butter as an emulsifier, it blends well into a fruit smoothie and makes it taste exactly like a (breakfast) chocolate shake.—Adrienne So
Protein Source Beef protein isolate Protein per Serving 24 grams Flavors 4, including unflavored, vanilla, and chai WIRED/TIREDLargeChevron WIRED- Tastes exactly like a chocolate shake
- Dairy- and whey-free
- Only three ingredients
TIRED- Expensive
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Best Low Calorie
Isopure
Zero Carb
This vanilla protein powder is the secret behind my favorite post-workout snack that masquerades as dessert. I mix it with Greek yogurt, whipped cream cheese (not regular!), and some crumbled graham crackers to make a little protein cheesecake dessert. I usually do about half a cup of the yogurt and cheese to anywhere between half a scoop to a full scoop of powder; you should taste-test it yourself to find your perfect ratio. It’s a great go-to after an evening workout, or in my case, a late aerial dance class that leaves my shoulder muscles screaming.
The Isopure’s vanilla flavor is impressively strong. It can taste a little too strong without enough ingredients to balance it out. It would make for a fun addition to a smoothie or other mock desserts, like some frozen banana ice cream. It has a really nice vanilla scent to it, too. —Nena Farrell
Protein Source Whey protein isolate Protein per Serving 25 grams Flavors 8, including banana cream, cookies & cream, and toasted coconut WIRED/TIREDLargeChevron WIRED- 8 flavor options that work for baking
- Zero carbs, zero sugar
- 25 grams of protein per serving size
TIRED- Potent taste
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Best Clean Protein
Transparent Labs
Grass-Fed Whey Protein Isolate
If your priority is clean ingredients and label transparency, Transparent Labs’ Grass-Fed Whey Protein Isolate is for you. This whey is sourced from hormone-free, grass-fed cows, and the formula doesn’t include artificial sweeteners, food dyes, or any of that extra junk (minus the natural flavors). It has Informed Choice and Informed Protein certifications, so consumers are getting what they’re expecting.
There are over a dozen flavors, but I opted for the unflavored version that blends well into smoothies and baked goods without hijacking the taste.
Protein Source Grass-fed whey protein isolate Protein per Serving 28 grams Flavors 16, including blueberry pancakes, salted chocolate caramel, and s’mores WIRED/TIREDLargeChevron WIRED- 18 flavor options
- 28 grams of protein per serving size
- No artificial sweeteners, fillers, or colors
- Third-party tested for purity and ingredient verification
TIRED- Contains natural flavors
- Not the sweetest or tastiest
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Best for Fiber
Mikuna
Vegan Protein Powder
This powder is unusual in that it’s not whey-, soy-, or pea-based, but consists entirely of powdered Peruvian lupin bean. A boon for those looking for a clean, single-source source of protein, Mikuna is vegan, paleo, keto, and gluten-free, and even the non-plain flavors (vanilla, cacao) only have five ingredients—along with calcium, fiber, iron, and all nine amino acids.
The flavored versions are actually quite tasty, sweetened with cacao powder or vanilla extract, coconut blossom nectar, and monk fruit. Be forewarned, though, that the powder alone can be texturally challenging—online reviews describe it as gritty and chalky, and after drinking it regularly for a few months, I think that’s being generous. (It will keep its suspension longer if mixed with a handheld electric whisk.) Mikuna is, however, an excellent way to bulk up a smoothie, and a potential game changer for those with digestive problems aggravated by dairy, soy, or peas. —Kat Merck
Protein Source Chocho Protein per Serving 20 grams per serving Flavors 3, including pure chocho, vanilla, and cacao WIRED/TIREDLargeChevron WIRED- Plant-based
- Vegan, paleo, keto, and gluten-free
TIRED- Gritty and chalky texture
- More expensive than its competitors.
Compare Top 11 Protein Powders
Product | Protein Source | Protein Per Serving | Flavors | Price per Serving |
---|---|---|---|---|
Optimum Nutrition Gold Standard | Protein blend (whey protein isolate, whey protein concentrate, hydrolyzed whey protein) | 24 grams | 20 | $1.55 |
Dymatize ISO100 | Hydrolyzed whey protein | 25 grams | 14 | $1.28-$2.25 |
Transparent Labs Grass-Fed Whey Protein Isolate | Grass-fed whey protein isolate | 28 grams | 16 | $2 |
Orgain Organic Vegan Protein Powder | Organic protein blend (organic pea protein, organic brown rice protein, organic mung bean protein, organic chia seed) | 21 grams | 11 | $2 |
Isopure Zero Carb | Whey protein isolate | 25 grams | 8 | $2.13 |
Vital Proteins Vital Performance Protein Powder | Milk protein isolate and bovine collagen peptides | 25 grams (including 10 grams of collagen) | 4 | $1.43 |
Be Well by Kelly Chocolate Protein Powder | Beef protein isolate | 24 grams | 4 | $2 |
Ritual Protein Daily Shake 18+ | Organic yellow field peas | 20 grams | 1 | $3.27 |
Promix Grass-Fed Whey Isolate | Grass-fed whey protein isolate | 30 grams | 4 | $1.29-$2.21 |
Momentous Grass Fed Whey Protein Isolate Powder | Grass-fed whey protein isolate | 20 grams | 3 | $2.19 |
Mikuna Vegan Protein Powder | Chocho | 20 grams | 3 | $2.99 |
More Protein Powders to Consider
Naked Casein: With only one ingredient—micellar casein sourced from hormone-free skim milk—it’s about as clean as it gets. No added sugar, no artificial sweeteners, and no unnecessary additives. It’s cold-processed, to avoid any nastiness from chemicals or synthetic fillers, and it’s independently tested for both heavy metals and gluten. Each serving packs 26 grams of protein and 618 milligrams of calcium (about 48 percent of your daily value). But Naked Casein doesn’t contain lecithin, so it won’t dissolve as smoothly as other powders. The best way to mix is with a blender, but I couldn’t stomach the taste of this one.
Seeq Clear Protein Powder: I was skeptical when I purchased Seeq Clear Protein, but I’m a sucker for anything watermelon-flavored. I was pleasantly surprised. It tastes like a creamier sports drink (I promise it’s better than that description sounds), and each serving has 22 grams of protein and 4.5 grams of BCAAs. There are zero grams of sugar. Like a lot of other clear protein powders, it’s often more expensive than its counterparts. But if lactose irritates your stomach or you want something more like juice and less like a milkshake, it’s worth trying—especially if you mix it with extra water, since it’s on the sweet side. Worth noting is that it takes forever to dissolve, so use a frother or allot extra shaking time. —Louryn Strampe
Ghost Whey Protein Powder: Ghost is the protein powder for people who want their post-workout snack to taste like dessert. With flavors like Oreo, Cinnabon, and Chips Ahoy!, it’s arguably one of the best-tasting whey proteins on the market. Each scoop delivers 26 grams of protein (50 percent of the daily value) and blends well in shakes, oats, or even DIY protein ice cream. The trade-off here is a longer ingredient list that includes gums, high-fructose corn syrup, and titanium dioxide—a whitening pigment banned as a food additive in Europe.
Sakara Protein + Greens Super Powder: With 17 grams of plant-based protein per serving, Sakara’s Protein + Greens is just three shy of the 20-gram benchmark we aim for. The blend of pea, hemp, and pumpkin proteins is bolstered by a “super greens” mix of spirulina, wheatgrass, barley grass, and chlorella. Is it dramatically transforming my gut health? Probably not. But on days when my vegetable and protein intake is low, a scoop of this in my smoothie (plus some Greek yogurt for an extra 18 grams of protein) makes me feel a little less like a goblin surviving on iced coffee and string cheese.
Wavelength Vanilla Protein Powder: In addition to 20 grams of pea protein per serving, Wavelength’s plant-based powder boasts trendy adaptogens and nootropics like maca root, ashwagandha, and Chaga mushroom extract. The brand doesn’t disclose how much of each is in the mix, so it’s hard to say if they’re doing much beyond adding to the price tag. The taste is deeply earthy, which makes it better suited for baking than chugging. Wavelength also makes Little Ripples, a protein powder formulated for kids. Reviews editor Adrienne So made a shake with it for her 8- and 10-year-olds, but it had a strange, chalky texture and a bit of a barnyard funk smell. They refused to drink it.
BSN True-Mass Weight Gainer, Muscle Mass Gainer Protein Powder: If you’re trying to bulk up or struggle to hit your calorie goals, BSN True Mass is worth considering. This mass gainer packs 1,200 calories per serving, with 50 grams of protein and 215 grams of carbohydrates. Its protein blend includes whey concentrate, casein, milk protein isolate, whey protein isolate, hydrolyzed whey isolate, and micellar casein, so you get a mix of fast and slow-digesting proteins. It also delivers 450 milligrams of calcium and 880 milligrams of potassium, which is a bonus if you want to squeeze in some micronutrients. It tastes great—the strawberry milkshake flavor is spot-on—but these are two scoops at 310 grams, so you’ll need to be comfortable with the jumbo serving size. I can’t fully endorse the formula because it’s packed with artificial sweeteners like sucralose and acesulfame potassium, as well as some iffy additives, including maltodextrin and a gum blend (cellulose, guar, gum Arabic, and xanthan) that might not sit well with everyone. If you have a sensitive stomach, you might want to pass. This one brings protein farts to a new level.
Aloha 12oz Chocolate Sea Salt Protein Drink (Pack of 12): Aloha’s protein powder is still on my testing docket, but I have tried the brand’s ready-to-drink shakes. The chocolate sea salt is surprisingly tasty; it’s creamy and rich, but there’s a faint aftertaste. I sometimes use the vanilla flavor as a milk base for smoothies, and there’s also a coconut flavor I haven’t gotten my hands on yet. Each serving packs 20 grams of plant-based protein.
Accessories to Try
Beast Mega 1200 for $199: If you’re looking to level up your smoothie game, Mega’s 1,200-watt motor cuts through frozen fruit, powders, and fibrous foods with an ease that personal blenders can’t match. One button, a timed cycle, and consistent chunk-free results. The three included Tritan vessels are designed with ribbed interiors that boost turbulence for silkier smoothies. Plus, the drinking lid and straw system transforms your blender into a travel cup without the extra dishes. It’s available in five colors—cloud white, carbon black, navy, sand, sage, and charcoal—and backed by a two-year warranty.
Vitamix Ascent X5 for $750: The Vitamix Ascent X5 is expensive, but if you’re in the market for an all-purpose blender, this is the one that makes smoothies feel like an art form. It’s got 10 preset programs (smoothie bowls, nut butters, nondairy milks, and more), which means your protein recipes can get as creative as you want. It has a tamper for the thickest of shakes, and the on-screen indicator tells you exactly when to step in. Plus, if your blend needs more mixing, hit the “add 15 seconds” button. The self-cleaning mode is my favorite feature; it’s not groundbreaking, but I’d rather gouge my eyes out with a dull chopstick than scrub post-smoothie gunk off a blender. Plus, it’s backed by a 10-year warranty, which makes it an investment worth considering.
Ninja Blast Portable Blender for $53: Finally, for an affordable option, you might want to consider Ninja’s tiny portable blender, which charges via USB-C. The motor isn’t super powerful, and the battery isn’t long-lived (one charge lasts long enough to thoroughly blend one yogurt smoothie with frozen berries), but this blender is affordable, the vessel and lid are dishwasher-safe, and it’s tiny enough to have a permanent home on editor Adrienne So’s counter. She has been using this daily for a year to make morning smoothies from Greek yogurt, milk, and frozen berries and bananas with no issues.
Frequently Asked Questions
Is Protein Powder Good for You?
It depends. If you’re eating a balanced diet, you’re likely getting all the protein your body needs. Whole foods—nuts, seeds, eggs, low-fat dairy, legumes, and lean meats—offer protein along with fiber, vitamins, and other nutrients that a scoop of powder simply can’t match. Protein powders are not meal replacements.
That said, high-quality protein powder may be beneficial if you are recovering from surgery or an injury, have difficulty eating due to illness or aging, or need extra protein for wound healing. It’s also useful if you’re following a strict diet (like veganism) and aren’t getting enough protein through food alone. For athletes, protein powder can be a convenient way to refuel post-workout because the body absorbs liquid protein quickly. Unless you fall into one of these categories, you don’t need a protein powder.
Which is the Best Type of Protein Powder?
When you’re looking at different protein sources, also keep in mind whether you’re getting a complete or incomplete protein. All of our picks are complete proteins, meaning that they provide all nine essential amino acids that the body doesn’t product itself.
Whey protein: Whey protein comes from milk during the cheese-making process, and it’s one of the most efficient ways to get protein into your system. It’s packed with essential amino acids, meaning your body can absorb and use it quickly—great for muscle recovery and growth. There are three whey subtypes, each with its own pros and cons.
- Whey protein concentrate: The least processed version, typically 70-80 percent protein, with the rest made up of carbohydrates, fats, and lactose. It retains beneficial compounds like immunoglobulins and lactoferrin, which may support immunity. It’s also the cheapest.
- Whey protein isolate: Most of the fat and lactose is filtered out, leaving a protein that’s about 90 percent protein and lower in carbohydrates. This is a solid choice if you want more protein per scoop or have a mild lactose intolerance.
- Whey protein hydrolysate: Whey protein hydrolysate is predigested using enzymes, making it the quickest to absorb. It’s often used in medical nutrition and by elite athletes who need rapid muscle recovery. It’s also the priciest.
Casein protein: Casein is the other major protein in milk. When consumed, it forms a gel in your stomach, meaning your body gets a slow, steady release of amino acids. This makes a great option for pre-bedtime protein or keeping hunger at bay between meals. There are two main subtypes:
- Micellar casein: The least processed, offering sustained protein release.
- Casein hydrolysate: Predigested for faster absorption, though still slower than whey.
Pea protein: This plant-based protein is made from ground yellow split peas and is high in essential amino acids, including BCAAs. It’s dairy-, gluten-, and soy-free, making it great for people with allergies. Technically, it’s a complete protein, but it’s lower in methionine, so some experts would argue it’s not as complete as whey.
Brown rice protein: Brown rice protein is high in fiber, easy to digest, and hypoallergenic, but it lacks some essential amino acids (specifically lysine), making it an incomplete protein. That’s why it’s often blended with pea protein for a more balanced amino acid profile. It’s gentle on the stomach and good for people with food sensitivities.
Beef protein isolate: Meat contains protein! Beef protein isolate is made from cow tissue that has been extracted and filtered into powder.
What Are the Potential Harms of Protein Powder?
While high-protein diets have been studied extensively, the long-term effects of regularly consuming protein in powdered form remain unclear.
- If you’ve ever chugged a protein shake and immediately regretted it, you’re not alone. Dairy-based blends (whey and casein) can cause bloating, gas, and other gastrointestinal issues—especially for those with lactose intolerance or sensitivities. Plant-based protein powders aren’t always more digestible, as some contain sugar alcohols, gums, or thickeners that can also upset your stomach.
- Because it’s classified as a dietary supplement, the FDA doesn’t regulate protein powder the way it does food or medication. That means it’s up to manufacturers to evaluate their own products for safety, which leaves plenty of room for inconsistencies and contamination.
- A report from the Clean Label Project tested 160 powders for contaminants and found that many contained heavy metals like lead, arsenic, and cadmium, as well as BPA (a plastic additive) and pesticides. Organic powders showed three times more lead and twice as much cadmium compared to non-organic options. Plant-based powders averaged three times more lead than whey-based alternatives. And cocoa-containing powders contained four times more lead than vanilla. These toxins can creep into powders through contaminated soil (since many plant-based proteins come from crops) or manufacturing processes that introduce pollutants along the way.
Not all protein powders are contaminated, but it’s worth checking third-party testing results (like those published by Clean Label Project) before incorporating one into your diet.
What Factors Should I Consider When Choosing A Protein Powder?
Protein source: Whey, casein, soy, pea, brown rice, egg white—protein powder comes in many forms and caters to different needs (build muscle, weight loss, weight gain, post-workout recovery, etc.). Your choice depends on dietary preferences and your personal goals.
Protein content: If your goal is muscle growth, aim for 20 to 30 grams per scoop. Otherwise, match the amount of protein to your dietary or fitness needs.
Processing method: Concentrates are the least processed and have more nutrients. Isolates tend to have higher protein content and fewer carbs and fats, while hydrolysates digest the fastest.
Allergens and dietary preferences: Make sure your protein powder aligns with your diet. If you’re allergic to dairy, soy, gluten, or nuts, double-check labels as many powders sneak in allergens. If you’ve had digestive issues before, start with a small quantity to test your tolerance before going all in.
Additives and fillers: Watch for artificial sweeteners, gums, and thickening agents that can cause bloating and other gastrointestinal issues.
Flavors: Powders now come in every flavor from matcha to fruity cereal milk. Choose a flavor you’ll actually drink.
Brand reputation and certifications: Some brands are rigorous about quality control, third-party testing, and ingredient sourcing, and others aren’t. If you want peace of mind, look for certifications like Informed Sport and NSF Certified for Sport, which verify that the product contains what it advertises and is free of banned substances.
Cost: Compare cost per serving instead of just the upfront price.
How We Test Protein Powders
I’ve been downing protein powders for years, but for this guide, I put each one through a fresh round of testing. Each powder was sampled at least three times to assess taste, texture, and mixability. I mixed them with water, milk, and non-dairy alternatives. I also baked them into muffins and blended into the occasional smoothie because not all of us like our protein straight.
I prioritized powders with minimal to no additives and full transparency in sourcing—no unnecessary fillers, gums, or questionable sweeteners. Solubility was a major consideration, too. I also scrutinized manufacturing practices and third-party testing. Certifications (like NSF Certified for Sport or Informed Choice) mattered. Every pick is also a complete protein, meaning it contains all nine essential amino acids.
What Are We Testing Next?
I’ll be testing Gorilla Formula 23 Coconut Protein 6g BCAAS for $70, Komplex Nutrition Plant-Based Protein for $50, and Puori’s PW1—a pasture-raised whey protein powder—for $69. I’m also testing protein bars for an upcoming guide.
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