BioStacks
Source Naturals

L-Leucine

Powder · 0.5 Teaspoon · 76 servings

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What it does

Leucine

Form not confirmedGrade —

An essential amino acid for normal muscle-protein synthesis; extra leucine does not automatically increase muscle growth.

Muscle
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Ingredients (1)

IngredientDoseTarget/referenceForm

Other ingredients

No other ingredients listed

Lab testing

How to take it

With or without food

On the label

1/2 teaspoon daily, mixed with water or juice between meals.

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What 13 leucine supplements cost

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.

Not medical advice. Consult your healthcare professional.

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