BioStacks
GNC

L-Arginine & L-Citrulline

1 Caplet · 120 servings · $0.33/serving

Under-dosed

Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.

Ingredients (2)

L-Arginine500 mg

25% of effective dose · Premium form

L-Citrulline500 mg

17% of effective dose

Other Ingredients

Fillers, coatings, and additives

13Safe

MonoglyceridesEmulsifier

Safe

Magnesium StearateLubricant

Safe

Oleic AcidEmollient

Safe

Polyethylene Glycol (Coating)Coating

Safe

Silicon DioxideAnti-caking

Safe

Calcium SilicateAnti-caking

Safe

Carnauba WaxCoating

Safe

Microcrystalline CelluloseBinder

Safe

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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.