If your goal is muscle recovery or hitting daily protein targets, this high-purity whey isolate delivers 27g of **protein** per 31g scoop — nearly 87% protein by weight, which means very little filler is left after processing. Each serving puts you in a strong position without added fats, carbs, or sugar.

The unflavored format gives you flexibility to mix it into smoothies, oatmeal, or other foods without competing flavors. You're also getting 120mg of naturally occurring **calcium** and 130mg of **potassium** from the whey itself, though neither amount is meaningful for supplementation purposes.

The main limitation is what's not here. There are no added digestive enzymes, and whey isolate — while lower in lactose than concentrate — can still cause discomfort if you're highly lactose-sensitive. If that applies to you, start with a half scoop to assess tolerance.

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BioStacks

California Gold Nutrition SPORT

Whey Protein Isolate Unflavored

Powder · 73 servings · $1.44/serving

97 / 100Excellent

Supports

Score Breakdown

Formulation
97
Safety
100
Final score
97/100

Ingredients (5)

1 scored · 4 not scored

Whey Protein Isolate27 g

Optimal dose · Premium form

Vitamin D

Trace amount — not scored

Calcium120 mg

Trace amount — not scored

Iron

Trace amount — not scored

Potassium130 mg

Trace amount — not scored

Label Nutrition Facts

Nutrition

Calories and macros.

  • Calories120 Calorie(s)
  • Total Fat0 Gram(s)
    • Saturated Fat0 Gram(s)
    • Trans Fat0 Gram(s)
  • Cholesterol15 mg
  • Total Carbohydrates0 Gram(s)
    • Dietary Fiber0 Gram(s)
    • Total Sugars0 Gram(s)
  • Protein27 Gram(s)

Active Ingredients

From the label · % Daily Value

DV%

Sodium55 mg

4%

Vitamin D

Calcium120 mg

12%

Iron

Potassium130 mg

4%

Other Ingredients

Fillers, coatings, and additives

1Safe

Sunflower LecithinEmulsifier

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.