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Transparent Labs Protein Review (2026): Taste-Tested and Approved
After testing the company’s whey and plant-based options, one was a clear winner
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AARP Smart Picks
Looking for a way to get more protein or build muscle? It’s increasingly important as we age. Our bodies naturally lose muscle mass through a process called sarcopenia. To combat this condition, a higher protein intake combined with strength training could help. For older adults who struggle to get enough protein from whole foods, supplements like protein powders provide a practical way to meet daily goals.
If you’re looking online for a new protein supplement, you may have come across Transparent Labs. Our AARP Smart Picks team worked with older adult testers to evaluate two of the company’s protein powders: its Grass-Fed Whey Protein Isolate and Organic Vegan Plant-Based Protein.
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We analyzed each for mixability (the ease with which the powder dissolves into a liquid), taste, texture, formula, instructions and more to help you decide whether they may be right for you.
Both products performed well in our testing, but the Grass-Fed Whey Protein Isolate came out on top with its higher protein content per serving and top-notch marks in every category except cost. The Organic Vegan Plant-Based Protein stood out for its lower cost per serving and its vegan formulation, a nondairy blend of organic pea and rice proteins.
Read on for our review of Transparent Labs’ products, including details on how they performed in our assessments and whether the company’s offerings can help you reach your protein intake goals.
AARP Smart Picks reviews are for informational purposes only and are not a substitute for professional medical advice, diagnosis or treatment. Talk with your doctor or another health care provider before starting a new supplement or health product, especially if you have a medical condition or take prescription or over-the-counter medications. Supplements are not FDA-approved for safety and effectiveness and can cause side effects and interact with other medications.
These products are not intended to diagnose, treat, cure or prevent any disease. Pricing may fluctuate. You can visit each company’s website for the latest pricing.
Comparing Transparent Labs protein supplements
What to know about Transparent Labs
Transparent Labs stood out in our testing for its high protein content and use of natural ingredients. The two formulas we reviewed contain no artificial sweeteners, colors or preservatives. In addition to whey isolate and plant-based vegan protein powders, the company offers other sports nutrition products, including pre-workout, creatine, collagen and other supplements.
The Organic Vegan Plant-Based Protein powder earned high ratings for value, which our lab team evaluates using cost per serving and grams of protein per serving. And the Grass-Fed Whey Protein Isolate excelled in both taste and texture. Both products earned near-top-level scores for quality packaging and easy-to-follow instructions.
The supplements we tested are third-party-certified by Informed Choice, following a rigorous pre- and post-screening process to guarantee their safety, quality and integrity.
Transparent Labs discloses complete nutrition facts on their container labels, with clear ingredient lists, and makes its purity and ingredient-verification test results available online.
Note: This review is not meant to be clinical advice. It’s best to talk with your health care provider before starting any new supplement.
Transparent Labs Grass-Fed Whey Protein Isolate
AARP Smart Picks
- Pros and cons
- Features
Pros
Exceptional taste
Superb mixability and texture
Higher protein content
Cons
Pricey
Not suited for those with a milk allergy
Type: 100 percent grass-fed whey protein isolate
Protein per serving: 28 grams
Cost per serving: $2.17
Flavors: 22 options
Third-party tested: Yes, Informed Choice
Key takeaways from our testing
The Transparent Labs Grass-Fed Whey Protein Isolate earned top-notch scores for taste (we tested the French Vanilla flavor). Consumer tester Sandra, 71, said it was “very natural” and that the vanilla flavor came through but wasn’t “overwhelming.” She described the sweetness level as “perfect.” It is free of artificial fillers, colors and sweeteners and formulated with stevia extract, a plant-based no-calorie sugar substitute.
For people who like to switch up the taste of their supplements or try different novel flavors, the company offers this powder in a large assortment of 22 options, including Mint Chocolate Chip, Blueberry Pancakes and an unflavored version. In our September 2026 focus group of adults ages 50 to 69 who take daily protein supplements, one participant said he preferred unflavored protein powder for his smoothies because it tends to be lower in calories and can be customized by adding fruit.
This powder also received excellent marks for texture and mixability. Sandra said she was “very impressed” by how well it mixed with plain water. After shaking the blend in a bottle for 60 seconds, she found its consistency to be smooth with no clumps or grittiness.
Tester Sandra said the Transparent Labs Grass-Fed Whey Protein Isolate mixed well with water, resulting in a “smooth” consistency.
AARP Smart Picks
Tester Sandra said the Transparent Labs Grass-Fed Whey Protein Isolate mixed well with water, resulting in a “smooth” consistency.
Each serving contains 28 grams of protein, which is among the highest of any protein supplement we’ve tested. Protein powders with 27 grams or more per serving earn standout scores on this metric.
This formula is sourced from grass-fed cattle and contains all the essential amino acids, the building blocks of protein. Morgan Pearson, a registered dietitian and AARP medical reviewer, says it is rich in leucine, which can help the body build and maintain muscle.
The Grass-Fed Whey Protein Isolate is more expensive than the vegan option and earned only a fair mark for its cost per serving. A one-time purchase of the 2-pound tub costs $64.99 and contains 30 servings, which comes out to around $2.17 per serving. Whey protein isolate is generally more expensive than the concentrate form because it undergoes extra filtration to remove fats and carbohydrates.
Another knock: Because it’s derived from cow’s milk, the whey protein isolate isn’t suitable for people with a milk allergy. But Pearson notes that because it’s low in lactose, some people with lactose intolerance may still be able to consume it without any issues.
Transparent Labs Organic Vegan Plant-Based Protein
AARP Smart Picks
- Pros and cons
- Features
Pros
Almost-perfect value rating
Organic ingredients with no lactose
Clear directions
Cons
So-so taste and texture
Only two flavor options
Type: Organic pea and rice proteins
Protein per serving: 25 grams
Cost per serving: $1.67
Flavors: French Vanilla or Chocolate
Third-party tested: Yes, Informed Choice
Key takeaways from our testing
The Transparent Labs Organic Vegan Plant-Based Protein is made from a blend of organic pea protein isolate and organic rice protein concentrate. It comes in two flavors: Chocolate and French Vanilla, the variety we evaluated. At $1.67 per serving, it earned a near-perfect value score and has one of the lowest costs per servings of any protein powders we’ve tested. Yet it still packs a robust 25 grams of plant-based protein into each serving.
It contains no added sugars or artificial flavors, colors or fillers, and unlike products made with whey, it’s also dairy-free, so it may suit people with lactose intolerance or a milk allergy. That said, the Transparent Labs website says it’s manufactured in a facility that may also process milk products., so individuals with severe allergies should consult a doctor before trying it.
This protein powder earned favorable marks for its packaging and straightforward instructions. Cindy, a 65-year-old tester, said that “the label is nice and clear. I didn't have any issues understanding the directions.”
Consumer testers also said the container was easy to open and close. Tester Sandra said she liked that the opening is large enough to reach in and scoop the powder when it's low.
The Transparent Labs Organic Vegan Plant-Based Protein blends organic rice and pea proteins, delivering 25 grams of vegan protein per serving.
AARP Smart Picks
The Transparent Labs Organic Vegan Plant-Based Protein blends organic rice and pea proteins, delivering 25 grams of vegan protein per serving.
Our consumer testers gave the French Vanilla version average scores for taste and texture, describing its consistency as chalky and slightly gritty. Sandra found it to be “kind of bitter and bland with just plain water.” And Cindy said, “The texture is off-putting when it’s with just water or milk.”
They both indicated that they’d rather add it to a smoothie with milk or fruit or to baked goods. “It’s not sweet or vanilla-forward. The flavor doesn’t cover the powdery taste overall,” Cindy said. Since it comes in only two flavors,it may not be to your liking if you’re looking for more unique options.
How we test protein powders
We began our process by researching the market: Which protein powders are popular and why? Which companies have positive reviews — and are those reviews legitimate? We also surveyed 300 adults ages 50-plus and convened a focus group with older adults who regularly take protein supplements. Their insights helped us pinpoint which factors matter most to older adults when choosing a protein powder and what drives overall satisfaction with these products. (We quote participants using pseudonyms to preserve their privacy.)
We consult with medical professionals to review the nutritional information and formulation of every supplement we test. Nutrition experts weigh in on each product’s active ingredients, potential additives and appropriateness for various age groups and health conditions. With the experts’ help, we ensure that each supplement has independent third-party verification from trustworthy organizations such as ConsumerLab.com, NSF International and the U.S. Pharmacopeia Convention. That’s especially important because the U.S. Food and Drug Administration (FDA) does not evaluate dietary supplements for safety or effectiveness.
The Smart Picks lab team then purchases supplements that pass our initial screening. We recruit independent older adult testers to prepare and evaluate the protein powders and answer questions about packaging, instructions, mixability, taste, texture and more. We also assess other factors such as value and protein content per serving. For additional information, see our supplements testing methodology.
How much do Transparent Labs protein powders cost?
A one-time purchase of a 2-pound canister of Transparent Labs Grass-Fed Whey Protein Isolate costs $64.99, while the Organic Vegan Plant-Based Protein costs $49.99. Each contains 30 servings.
That means the price per serving is around $2.17 and $1.67, respectively, which is in line with what many of our survey respondents spend on their preferred protein supplements. About half (49 percent) said they pay $2 or less per serving.
Transparent Labs offers a subscription plan with 10 percent off and free shipping. You can choose to have your order sent every 15, 30, 45 or 60 days, and pause or cancel your subscription at any time.
Is Transparent Labs protein right for you?
To help you decide whether to purchase a protein powder from Transparent Labs, consider the following.
Are you looking for whey or plant-based protein?
Protein supplements are available in animal-based and plant-based varieties, each offering different absorption rates and amino acid profiles. Transparent Labs sells several products in each of these categories, including the whey protein isolate and the pea-rice protein powders we evaluated.
However, if you’re seeking an alternative protein source such as hemp, soy or egg whites, Transparent Labs won’t be the right choice for you.
What is the average daily recommended protein intake for older adults?
“Protein intake for this crowd should be about 1 to 1.2 grams per kilogram of body weight, which, for your average adult, comes out to 70 to 85 grams per day. If you’re more physically active or recovering from an injury, the range increases to 1.2 to 1.5 grams per kilogram of body weight, or about 90 to 105 grams per day.”
— **Dustin Moore, a registered dietitian and nutrition scientist in Los Angeles.
Do you want to choose from multiple flavors?
If so, then the Transparent Labs Grass-Fed Whey Protein Isolate may be appealing to you since it comes in more than 20 flavors compared to the two options (french vanilla and chocolate) that are available for the Organic Vegan Plant-Based Protein. If you would like to try a few different ones, Transparent Labs also offers a variety pack of five flavors of Grass-Fed Whey Protein Isolate for $15.99.
We found that taste mattered most in our September 2026 survey of 300 adults ages 50 and older who had bought a protein supplement in the past year. It was selected over all other purchasing criteria by 77 percent of respondents. It was also the top priority for five of the seven participants in our focus group, even over protein source and content. “Make sure it tastes good. If it doesn’t, you’re not going to drink it,” said Karen, a 58-year-old focus group participant from St. Louis.
Though taste is subjective, we include it in our assessments because it is a deciding factor for many people. Our consumer testers analyze the overall flavor profile, noting sweetness, chalkiness, whether the flavors taste artificial or natural and any unpleasant aftertaste
Expert tip for getting more protein throughout the day
An unflavored powder with simple ingredients is a good option for its versatility, says **Cynthia Sass, a registered dietitian nutritionist in Los Angeles. It can be blended into a smoothie or added to a savory dish, such as hummus, tomato soup or mashed cauliflower, to boost protein content, she adds.
Do you have a strict budget?
When asked about their biggest barrier to consistent supplement use, about 33 percent of our survey respondents cited cost.
The Transparent Labs Organic Vegan Plant-Based Protein costs about $1.67 per serving, while the Grass-Fed Whey Protein Isolate costs around $2.17 per serving. If you are looking for a more affordable option, the vegan powder may be the better pick.
Do you have milk allergies or sensitivities?
Whey protein — which comes in both isolate and concentrate forms — is derived from milk and contains lactose, which may cause digestive upset in some individuals, whereas plant-based options are dairy-free. If you are lactose intolerant, the Grass-Fed Whey Protein Isolate won’t be good for you. And while vegan protein may suit people who are avoiding dairy, those with a severe allergy should know there's potential for cross-contamination, since Transparent Lab products are manufactured in a facility that processes milk.
Benefits of protein powders for older adults
Older adults often experience a decline in appetite, which may eventually lead to insufficient protein intake or undernourishment.
“Adequate protein, paired with resistance exercise when appropriate, helps support muscle health and everyday function,” says **Melanie Murphy Richter, a registered dietitian nutritionist in Los Angeles.
Generally speaking, protein powders may help:
- Bridge nutritional gaps
- Stimulate muscle protein growth
- Combat age-related muscle loss, or sarcopenia
- Support bone health and density
- Encourage recovery from illness, injury or surgery
According to Richter, the protein source and an individual’s overall eating patterns matter too. “Whey is rich in leucine and effective at stimulating muscle protein synthesis … and a well-formulated pea or plant blend can also provide the essential amino acids needed to support muscle health,” she says. She recommends a powder that “helps someone meet their target, agrees with their digestion, and fits into a diet that includes plenty of fiber-rich plant foods.”
In her view, “Protein powder is a useful tool when it helps fill a gap, as part of a broader approach that includes nourishing meals and movement.”
Potential side effects of protein powders for older adults
Some older adults may experience undesirable reactions from a protein supplement, especially if they have food sensitivities. Potential side effects include:
- Bloating or gas
- Stomach pain or cramping
- Diarrhea
- Nausea
- Constipation
- Allergic reactions to certain ingredients, such as whey and casein (cow’s milk proteins) or soy
“When choosing a protein powder, a simple ingredient list is a good starting point. Look for a product that provides the protein you need without a lot of added sugars, sweeteners or other unnecessary ingredients,” says Kirsten Swantee, a registered dietitian at JM Nutrition in Nova Scotia, Canada. She points out that sugar alcohols in particular (such as sorbitol, maltitol and xylitol), can cause digestive upset in some people.
Protein powders may also require special consideration if you take medications or have certain health conditions. “For individuals with preexisting kidney or liver disease, protein needs may be different from the general recommendations and should be individualized,” says Swantee.
Some formulas contain added vitamins, minerals, herbs or stimulants that can interact with medications. If you take prescription medications, check the ingredient list and ask your dietitian or health care team about potential interactions. Individuals with liver disease may also need individualized guidance.
FAQs
Transparent Labs does not offer a traditional trial period. However, it does offer a 45-day satisfaction guarantee for products purchased from its website or authorized U.S. sellers. The company will provide a full refund or store credit if you aren’t satisfied and may ask for proof of purchase.
You can buy Transparent Labs supplements directly on its website or through online retailers such as Amazon. Some stores, such as The Vitamin Shoppe and Sprouts Farmers Market, also sell the company’s products at select locations. Transparent Labs offers an online store locator to help you find physical locations near you if you prefer to shop in person.
The two protein powders we tested from the company, the Grass-Fed Whey Protein Isolate and the Organic Vegan Plant-Based Protein, have no artificial sweeteners, preservatives or coloring. The Grass-Fed Whey Protein Isolate, “uses stevia, natural flavors, and — in some flavors — color from ingredients such as beet or fruit and vegetable extracts,” says Pearson, the registered dietitian and AARP medical reviewer.
Questions or feedback? Email us at AARPSmartPicks@aarp.org.
**Dustin Moore is a brand manager at Swanson Vitamins
**Cynthia Sass partners with brands on product innovation, communications strategy, media integration and more
**Melanie Murphy Richter is the Director of Communications at L-Nutra, a company that makes protein supplements
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