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Only Protein Protein Powder Vanilla

3 established essential nutrients

Graded on the nutrient adequacy of 4 labeled ingredients.

D
44out of 100Grade D
Research evidence score

Graded on 3 established essential nutrients · led by Fiber

How the ingredients work together

Known interactions from published nutrition research — separate from the evidence grade.

Iron + Vitamin CWork together

Vitamin C markedly improves non-heme iron absorption by reducing it to its more absorbable form.

Calcium vs IronCompete

Calcium inhibits iron absorption when taken together. If you take this for the iron, consider spacing it from calcium-rich meals or supplements.

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Ingredient breakdown

—
FiberSupports digestive health and glycemic control
Research direction: No studies foundEvidence: 0 studiesDose: 1 GramEvidence strength: Not enough research yet - no studies found for this specific claim
C
CalciumSupports bone density and muscle contraction
Research: Established essential nutrientDaily Value: 6.8%Dose: 89 mgEvidence strength: Established nutrient — only a small dose in this product
D
IronSupports oxygen transport and energy
Research: Established essential nutrientDaily Value: 4.4%Dose: 0.8 mgEvidence strength: Established nutrient — only a token dose in this product
D
Vitamin CSupports immune function and antioxidant defense
Research: Established essential nutrientDaily Value: 0.3%Dose: 0.26 mgEvidence strength: Established nutrient — only a token dose in this product

This summary describes only the ingredients and the research behind them — it is not a judgment of the product or its marketing. Grades reflect the weight of published evidence cross-referenced against 350M+ research papers. How we grade →

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