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Best Protein Powder

Transparent Labs

100% Grass-Fed Whey Protein Isolate

Transparent Labs 100% Grass-Fed Whey Protein Isolate is a whey isolate protein powder with 28 g of protein per 1 Scoop (34.9g). It scores 90/100 on the TBPP Quality Score. It is Informed Choice and Informed Protein.

Informed ChoiceInformed Protein
Our score
90/100
Methodology v1.0
Protein
28g
1 Scoop (34.9g)
Sugar
1g
Per serving
Protein by weight
80%
Per serving
$2.17
$1.93 per 25 g protein

Nutrition per serving

Milk Chocolate flavor, from the label.

Nutrition per serving
Serving size1 Scoop (34.9g)
Protein28 g
Calories130
Carbohydrates1 g
Sugar1 g
Fat1 g
Sodium210 mg
Protein by weight80%
LeucineNot verified
BCAAsNot verified

How it scored

90 of 100 points. How we score

CriterionPointsWhy
Protein density30 / 3080% of each scoop is protein
Third-party testing15 / 25Independently tested for contaminants or label accuracy
Label transparency20 / 20Fully disclosed formula, no amino spiking
Sugar10 / 101 g sugar per serving
Ingredient simplicity10 / 10Natural flavors and sweeteners
Verified label data5 / 57 of 7 label values verified

Formula and label

Formula and label
TypeWhey Isolate
Protein sourcesGrass-Fed Whey Protein Isolate
Third-party testingInformed Choice, Informed Protein
SweetenersStevia Extract
Proprietary blendNo
Added free amino acidsNo
DietaryGluten-Free, Non-GMO, Grass-Fed
AllergensMilk
Made byTransparent Labs
Sold atTransparent Labs (direct)

Price

$64.99–$109.99 for 2 lb. About $2.17 per serving, or $1.93 per 25 g of protein.

Sizes: 2 lb (30 servings), 4 lb (55 servings)

Flavors (22)

  • Milk Chocolate
  • French Vanilla
  • Dark Chocolate
  • Unflavored
  • Chocolate Peanut Butter
  • Oatmeal Chocolate Chip Cookie
  • Cinnamon French Toast
  • Blueberry Pancakes
  • Chocolate Chip Cookie Dough
  • Mocha
  • Chocolate Hazelnut
  • Mint Chocolate Chip
  • Vanilla Peanut Butter
  • Peanut Butter
  • Milk and Cookies
  • S'mores
  • Butterscotch Pecan
  • Cocoa
  • Neapolitan
  • Salted Chocolate Caramel
  • Strawberry Milkshake
  • Vanilla Bean

Sources

Nutrition read from the brand's Milk Chocolate Nutrition Facts label image (30-serving tub): 1 scoop 34.9 g, 130 kcal, 28 g protein, 1 g carbs, 1 g sugar (0 g added), 1 g fat, 210 mg sodium; ingredients grass-fed whey protein isolate (33 g), cocoa powder, natural flavors, salt, stevia extract, sunflower lecithin; 'Contains: Milk'. Some flavors contain peanuts/tree nuts per brand page; serving weight and sweetener vary by flavor (NNF Cocoa/Vanilla Bean versions exist). Leucine/BCAA not on label. Informed Choice and Informed Protein certification stated in brand page copy (brand also says it is NSF-certified at the facility level, which is not product-level NSF Certified for Sport; product-level NSF listing not confirmed so not listed). Prices from brand Shopify data 2026-10-13: 2 lb $64.99, 4 lb $109.99; Strawberry Milkshake and Vanilla Bean shown out of stock.

Good to know

Last checked 2026-10-13. Labels change, so check the package before buying if you have allergies. If you are pregnant, nursing or buying for a child, ask your doctor before adding a supplement.

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Mass Gainer

Mass Gainer · 199 g scoop
Informed Choice12 g sugar
Protein
53g
Sugar
12g
Our score
58/100
$5.33 / servingChecked 2026-10-13