BioStacks
Nutricost

Whey Protein Isolate (Vanilla)

Powder · 1 Scoop (37g) · 62 servings · $1.18/serving

60 / 100Good

Score Breakdown

Formulation
85
Safety
71
Final score
60/100

Ingredients (7)

Potassium

100%

Dose

120 mg

Target

99–500 mg

Form

Sodium

100%

Dose

320 mg

Target

300–1000 mg

Form

Phosphorus

90%

Dose

90 mg

Target

100–500 mg

Form

Calcium

110 mg

Trace amount — not scored

Iron

0.3 mg

Trace amount — not scored

Other Ingredients (4)

SucraloseSweetener

Dose context matters. As a trace excipient in a tablet coating or capsule, the amount is minimal and not a meaningful concern. The evidence below applies to the gram-level intakes typical of sweetened protein powders, pre-workouts, and drink mixes: a 2022 human trial (Suez et al., Cell) showed sucralose disrupts gut bacteria and worsens blood sugar control in healthy adults, and a 2023 study (Schiffman et al.) found that sucralose-6-acetate — a compound formed when sucralose is digested — was genotoxic to human cells in vitro. It remains an artificial sweetener with no nutritional purpose.

Natural FlavorsFlavor

Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.

Sea SaltFlavor

Basic food-grade salt used for taste in supplements

Whey ProteinProtein Source

Common dairy-derived protein that sometimes appears in the other ingredients list due to label parsing

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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.