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MacKenzie Scott, Melinda French Gates, and Lauren Sánchez Bezos are rewriting the rules of billionaire giving—one quietly, one strategically, one very publicly

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HealthDietary Supplements

Transparent Labs Protein Powder Review (2026): Nutrition Expert Approved

Emily Phares
By
Emily Phares
Emily Phares
Health Commerce Staff Writer
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Emily Phares
By
Emily Phares
Emily Phares
Health Commerce Staff Writer
Down Arrow Button Icon
May 14, 2026, 11:43 AM ET
Updated June 17, 2026, 12:17 PM ET
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It can be tough to get enough protein, especially if you’re a busy professional who’s used to skipping breakfast, rushing through a quick desk lunch, or throwing together dinner at the last minute. Protein powders have made it easy to get a hefty dose of protein in just one glass, but there’s a lot of variety out there.

So, we asked our testing team to try a popular product in this category, Transparent Labs Whey Protein Isolate, and report back. Here’s what we learned about its protein content, mixability, flavor, and more—and as always, we had our registered dietician review the product for safety.

Why Trust Fortune

Our team of expert testers has tried hundreds of the most popular supplements on the market today, using our comprehensive supplement testing methodology to find the best products for all folks.

Our Overall Score

After testing multiple protein powders, our tester gave this protein powder an overall 5 out of 5 rating.

Transparent Labs Protein Powder

An impressive formula that tastes great, too
Fortune score5/5
Transparent Labs Protein Powder
Check Price

at Transparent Labs

  • Our thoughts: This is an easy-to-mix protein powder with a natural flavor and solid ingredient profile
  • Who it’s for: Those looking for an easy, flavorful protein boost and don’t mind consuming dairy
  • What makes it different: This protein powder is sourced from grass-fed cows and made without growth hormones, artificial sweeteners, dyes, or fillers

Pros

  • Delicious flavor
  • No artificial sweeteners, dyes, or fillers
  • Third-party tested

Cons

  • Contains dairy, so not suitable for people following a vegan diet
  • Instructions aren’t as clear as we would like
  • Subtle sweetness might be too mild for some

Transparent Labs Grass-Fed Whey Protein Isolate Specs

SpecsDetails
Protein per serving28 grams
Calories per serving130
Third-party testingYes
Cost per serving$2.00
Serving per container30
Protein per serving
Details28 grams
Calories per serving
Details130
Third-party testing
DetailsYes
Cost per serving
Details$2.00
Serving per container
Details30

Our Experience with Transparent Labs Whey Protein

Transparent Labs Grass-Fed Whey Protein Isolate is sourced from grass-fed cattle, and the company says the cattle are raised humanely and without growth hormones. The protein powder includes stevia extract as a sweetener, but doesn’t have any artificial sweeteners, dyes, or fillers. It’s also worth noting that whey protein isolate is different from casein protein or whey protein concentrate. That’s because whey protein isolate typically goes through additional processing to remove more lactose, fat, and carbohydrates—and it also results in a higher amount of protein in the finished product.

Transparent Labs Protein Powder Review

Pete, a certified nutrition coach, tested this product. He noted, “This protein powder contains 28 grams of protein, which is slightly above the usual 20 to 25 grams of protein in a protein powder. This provides a very high protein-to-calorie ratio, 28 grams of protein per 130 calories.”

He loved nearly everything about this protein powder, reporting only one minor drawback. Here’s what he had to say.

What We Liked 

Pete liked several things about Transparent Labs Grass-Fed Whey Protein Isolate.

  • Mixability (5 out of 5): “The protein powder fully dissolved within 60 seconds and there were no visible chunks or clumping,” said Pete.
  • Taste (5 out of 5): Pete tested the French vanilla flavor and said, “I think Transparent Labs nailed the balance of sweetness and flavor for this protein powder.”
  • Sweetness (3 out of 5): While a rating of 3 would typically mean we docked points, in this case, it means the sweetness was just the right amount—not overly sweet or under-sweetened. “Transparent Labs doesn’t use any artificial sweeteners and only a moderate amount of stevia extract, giving the protein powder a natural taste and sweetness,” reported Pete.
  • Side Effects (5 out of 5): Pete said he didn’t experience any negative side effects or
  • digestive issues.
Transparent Labs Protein Powder Review

What We Would Change

Even though Pete liked the protein powder overall, he said there was one area where it could be improved.

  • Instructions (3 out of 5): Instructions were to mix each scoop of protein powder with 6 to 8 ounces of cold water (or any beverage of your choice), and adjust the amount of liquid to achieve the desired flavor and consistency. Given the lack of specificity, Pete rated these instructions as average—not excellent.
Transparent Labs Protein Powder Review

Who It’s For & Who It’s Not For

As with any supplement, make sure to check with a healthcare provider before adding this to your routine. Here’s who this product may be best suited for.

Transparent Labs Whey Protein is best for:Transparent Labs Whey Protein is not for:
AdultsChildren
People who eat dairyLactose-intolerant individuals
Those seeking more protein in their dietFolks who follow a vegan diet
Adults
Transparent Labs Whey Protein is not for:Children
People who eat dairy
Transparent Labs Whey Protein is not for:Lactose-intolerant individuals
Those seeking more protein in their diet
Transparent Labs Whey Protein is not for:Folks who follow a vegan diet

Pro Tip

Looking for another Transparent Lab’s product to complement this protein powder? Read our full Transparent Labs Pre-Workout review.

Comparing Transparent Labs to Other Protein Powders

Protein PowderProtein Per ServingCalories Per ServingSweeteners UsedProtein SourceThird-Party TestingCost per serving
Transparent Labs 100% Grass-Fed Whey Protein Isolate28 g130-150Stevia extractGrass-fed whey proteinYes$2.00
Nutricost Whey Protein Concentrate PowderUp to 30 g140SucraloseInstantized whey protein concentrateYes$1.28 to $2.11
Ritual Essential Protein Daily Shake20 g120Stevia extract, organic monk fruit extractOrganic pea proteinYes$2.93
Legion Whey+ Certified Grass-Fed Irish Whey Protein Isolate22 g100Stevia extractGrass-fed cattleYes$2.17
Transparent Labs 100% Grass-Fed Whey Protein Isolate
Protein Per Serving28 g
Calories Per Serving130-150
Sweeteners UsedStevia extract
Protein SourceGrass-fed whey protein
Third-Party TestingYes
Cost per serving$2.00
Nutricost Whey Protein Concentrate Powder
Protein Per ServingUp to 30 g
Calories Per Serving140
Sweeteners UsedSucralose
Protein SourceInstantized whey protein concentrate
Third-Party TestingYes
Cost per serving$1.28 to $2.11
Ritual Essential Protein Daily Shake
Protein Per Serving20 g
Calories Per Serving120
Sweeteners UsedStevia extract, organic monk fruit extract
Protein SourceOrganic pea protein
Third-Party TestingYes
Cost per serving$2.93
Legion Whey+ Certified Grass-Fed Irish Whey Protein Isolate
Protein Per Serving22 g
Calories Per Serving100
Sweeteners UsedStevia extract
Protein SourceGrass-fed cattle
Third-Party TestingYes
Cost per serving$2.17

Frequently asked questions

What is the best brand for whey protein?

Given that everyone has different health goals and dietary needs and preferences, we wouldn’t say there’s one “best” brand for all individuals. Our tester tried Transparent Labs Grass-Fed Whey Protein Isolate and reported that it was an excellent all-around product, but if you’re considering adding this to your routine make sure to check with a healthcare provider first.

Is Transparent Labs FDA-approved?

The U.S. Food and Drug Administration (FDA) does not approve dietary supplements for safety or efficacy, so when it comes to supplements, ingredients and their amounts may be different from what’s on the label. For this reason, we look for products that have been third-party tested to confirm safety and accuracy, and Transparent Labs Grass-Fed Whey Protein Isolate has been third-party tested.

Is Transparent Labs high-quality?

Transparent Labs Grass-Fed Whey Protein Isolate is sourced from grass-fed cattle and made without using growth hormones, artificial sweeteners, food dyes, or fillers. Additionally, it’s been third-party tested. These are some of the key attributes we look for in a high-quality supplement.

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About the Author
Emily Phares
By Emily PharesHealth Commerce Staff Writer

Emily is a health commerce staff writer at Fortune with over 10 years of experience writing about health. Her work has been featured by Harvard T.H. Chan School of Public Health, Boston Magazine, Forbes, and more.

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