BioStacks
Solaray

L-Lysine 500 mg

1 Capsule · 60 servings · $0.13/serving

iHerbAmazon
15 / 100Very Poor

Best for

Immune

Score Breakdown

Formulation
17
Safety
87
Final score
15/100

Ingredients (1)

L-Lysine

50%

Dose

500 mg

Target

1000–3000 mg

Form

Premium

Other Ingredients (3)

Rice ExtractFiller

Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.

Microcrystalline CelluloseBinder

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

HypromelloseCapsule

Plant-derived capsule material from cellulose

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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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