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Transparent Labs 100% Grass-Fed Whey Protein Isolate
Photo: Open Food Facts contributors (CC BY-SA)

Protein powders

Transparent Labs 100% Grass-Fed Whey Protein Isolate

Excellent out of 100 High confidence
  • Contains non-nutritive sweeteners
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Why it scores 97

Transparent Labs 100% Grass-Fed Whey Protein Isolate scores 97 out of 100 (Excellent) under GoodSwap’s published rules. What moved the score most:

  1. Whey protein concentrate / isolate: An ingredient typical of ultra-processed foods (NOVA group 4). Info
  2. Natural flavors: "Natural flavor" is a legal category (21 CFR 101.22(a)(3)): flavor substances from spices, fruits, vegetables, meat, dairy or fermentation. Info
  3. Stevia (steviol glycosides): WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. Emerging

Every line of the math is on The Receipt below, with its evidence tier and sources.

The Receipt

100% Grass-Fed Whey Protein Isolate

START100

Ingredients

  • Whey protein concentrate / isolate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [1]
  • Natural flavors
    Info "Natural flavor" is a legal category (21 CFR 101.22(a)(3)): flavor substances from spices, fruits, vegetables, meat, dairy or fermentation. [2][1]
  • Stevia (steviol glycosides)
    Emerging WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. [3][4]
  • Sunflower lecithin
    Info An additive class typical of ultra-processed foods (NOVA group 4). [1]
subtotal−3.5
TOTAL 97Excellent

100 − 3.5 = 96.5 → 97

GTIN 00874659001325 · 2026-05-23

score v1.3.0 · kb 2026.10.11

High confidence

Same product, same score. Every time.

Nutrition per 100 g

Energy379 kcal
Fat1.5 g
Saturated fat0 g
Trans fat0 g
Carbohydrates2.9 g
Sugars2.9 g
Added sugars0 g
Fiber0 g
Protein81.6 g
Salt1.3 g

Serving: 34.3g

Ingredients

High Moderate Not recognized Tap an ingredient for its evidence and rules.
Label text, as published

Grass-Fed Whey Protein Isolate, Natural Flavors, Stevia Extract, Salt, Sunflower Lecithin

Allergens and diets

Contains: Milk

  • Not vegan
  • Palm-oil-free

Always check the package: recipes change.

Healthiest protein powders in the US

More from Transparent Labs

Sources

  1. Ultra-processed foods: what they are and how to identify them

    Public Health Nutrition · April 2019 · Peer-reviewed

    doi.org

  2. 21 CFR 101.22 Foods; labeling of spices, flavorings, colorings and chemical preservatives

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Dec 19, 2016 · Law

    “whose significant function in food is flavoring rather than nutritional.”

    ecfr.gov

  3. WHO advises not to use non-sugar sweeteners for weight control in newly released guideline

    World Health Organization · May 15, 2023 · Agency assessment

    “The recommendation is based on the findings of a systematic review of the available evidence which suggests that use of NSS does not confer any long-term benefit in reducing body fat in adults or children.”

    who.int

  4. Dietary Guidelines for Americans, 2025–2030

    U.S. Department of Health and Human Services and U.S. Department of Agriculture · January 2026 · Regulator

    “Limit foods and beverages that include artificial flavors, petroleum-based dyes, artificial preservatives, and low-calorie non-nutritive sweeteners.”

    cdn.realfood.gov