BioStacks
GNC

L-Leucine 1500

3 Capsules · 40 servings

iHerbAmazon

Best for

Muscle

Ingredients (1)

L-Leucine

75%

Dose

1500 mg

Target

2000–5000 mg

Form

—

Other Ingredients (3)

Titanium DioxideColorant

Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Take it anytime

Timing doesn't matter for this one — taking it consistently does.

With or without food

On the label

Take 3 capsules daily as a dietary supplement or as directed by your healthcare professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

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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.

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