Transparent Labs Grass-Fed Whey Protein Isolate Review

This listing is for Transparent Labs Grass-Fed Whey Protein in the Milk Chocolate flavor, a naturally flavored, gluten free whey protein isolate powder sold as a 30 serving container with 28g of protein per serving and 9 amino acids. The page describes the product as made from naturally-fed, hormone-free whey and free of artificial sweeteners, food dyes, gluten, and preservatives. The maker states that its 100% Grass-Fed Whey Protein Isolate is one of the cleanest proteins on the market. The protein is said to be sourced from 100% grass-fed, grass finished American dairy cattle. According to the page, the product contains one of the industry's highest protein-by-weight ratios and packs 28g of protein per serving with minimal sugar or fat. The listing positions the powder to enhance recovery and increase strength. It says the product is highly bioavailable, light on the stomach and easy to go down, and is intended for those who want to support recovery and muscle growth while promoting overall health and longevity. The page explains that protein is made of amino acids, the building blocks of muscle proteins, and that all of the maker's protein powders contain all nine essential amino acids in a balanced ratio to support muscle protein synthesis. The listing also claims the powder is easily digestible and rapidly absorbed, designed with digestive health in mind, and is presented as a way to avoid bloating, gas, and digestive discomfort when increasing protein intake. The ingredient panel lists one scoop as Grass-Fed Whey Protein Isolate at 31.11g, with cocoa, natural flavor, sodium chloride and stevia. Directions say to mix each scoop with 6 to 8 fluid ounces of cold water or another beverage and to drink 1 to 3 scoops daily. The safety section advises consulting a healthcare professional before use if pregnant, nursing, taking meds, or having medical conditions, and says the product is not intended as a sole source of nutrition. It also notes that moisture can cause clumping and that settling may cause the powder level to vary between bottles. The allergen warning says the product is made on equipment that processes milk, eggs, soybeans, wheat, shellfish, fish oil, tree nuts and peanut oil. A California Proposition 65 warning mentions lead. Other flavours offered on the same listing include Chocolate Peanut Butter, French Vanilla, Neapolitan, Strawberry Milkshake, Dark Chocolate, Oatmeal Chocolate Chip Cookie, S'mores and a Variety Pack.

Product Focus: Muscle and Strength
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$65

Study, Trial or Testing Result Summary

MembersHuman studies

5 of these 85 human studies gave the ingredient by drip or injection, not by mouth.

This product is mainly grass-fed whey protein isolate, but studies on whey protein were part of this review, so its main ingredient has been graded here. The findings cover only the extra nutrients on the label. …

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Review Totals and Summary

Members18,061 reviews
18,061 reviews · Transparentlabs 7,686 · Amazon 2,212

Across the stores, Transparent Labs Grass-Fed Whey Protein Isolate has accumulated 10375 ratings, and the themes are drawn from the written reviews that could be read on their pages. Customers consistently the product, with a emphasis on its taste. …

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Biohacker Summary

MembersWhat our biohacker panel says

Vitamin D is the main ingredient, and nearly the whole panel spoke about it, with it or taking it themselves. They take it for immune , brain and mood, muscle function, and general or longevity, and a say people run , though one adds that supplementing makes sense if you are deficient. …

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RAL Summary

MembersThe tier and why

Its studied ingredients are at the doses that in studies, and reviews are on their own. The final check notes: The grade was judged on the trace minerals and vitamin D from the nutrition panel instead of whey protein isolate, the product's main ingredient at about 31 grams a serving, and whey protein findings were given.

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Musculoskeletal system. Combine with and possible side are for members.

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Supplement Facts

Includes 0g Added Sugars 0 g · Vitamin D 0 mcg · Calcium 110 mg
Supplement Facts
Serving Size 1 Scoop (34.9g)
Servings Per Container 30 servings per container
Amount Per Serving% Daily Value
Calories130
Total Fat1 g1%
Saturated Fat0 g0%
Trans Fat0 g
Cholesterol15 mg5%
Sodium210 mg9%
Total Carbohydrate1 g0%
Dietary Fiber0 g0%
Total Sugars1 g
Includes 0g Added Sugars0 g0%
Protein28 g49%
Vitamin D0 mcg0%
Calcium110 mg8%
Iron0.5 mg2%
Potassium130 mg2%
* Percent Daily Values are based on a 2,000 calorie diet.

Label source: Transparentlabs · Report a label change

Where to Buy

Transparent Labs · Amazon · Labdoor
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Our articles on this subject

Graded October 26, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.