BioStacks
Swanson

L-Arginine & L-Ornithine

1 Capsule · 100 servings · $0.12/serving

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Ingredients (2)

L-Ornithine

63%

Dose

250 mg

Target

400–2000 mg

Form

Premium

L-Arginine

25%

Dose

500 mg

Target

2000–6000 mg

Form

—

Other Ingredients (3)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Take it anytime

Take between meals — food blunts the rise in plasma arginine.

On an empty stomach

On the label

As a dietary supplement, take one capsule one to three times per day with water.

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

Price Check

$11.79

$10$20$50

Cheaper than 89% of 10 ornithine supplements

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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.

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