Supplement reference
L-Arginine
A source-linked reference on L-Arginine, evidence, safety and product identity. Sources checked 6 September 2026.
Source and review status
Published sources checked
Sources checked on: 6 September 2026
Qualified clinical review: Pending. This page has not been clinically reviewed.
About this source check
AI-assisted editorial source checking covers the cited material and its stated limits. It is not a systematic review, verification of a supplied product, or clinical sign-off.
Editorial role: InfoAddict. Last material change: 6 September 2026. Next source review: 6 March 2027.
Ingredient and preparation
L-arginine is an amino acid used in protein metabolism and is sold as a single-ingredient supplement.
Sources: National Institutes of Health, Office of Dietary Supplements
Evidence and limits
NIH ODS reports limited, conflicting exercise trials and little to no overall effect on aerobic or anaerobic performance. That exercise context does not establish a circulation or sexual-function claim.
Sources: National Institutes of Health, Office of Dietary Supplements
Safety and a useful record
Potential interactions depend on medicines and health history. Do not use a general ingredient description to infer safety with cardiovascular or blood-pressure medicines.
Sources: National Institutes of Health, Office of Dietary Supplements, National Center for Complementary and Integrative Health
Record the exact ingredient, other products and the measured outcome rather than relying on a marketing claim.
Sources: National Center for Complementary and Integrative Health
Published sources
- Dietary Supplements for Exercise and Athletic Performance - Health Professional Fact Sheet
National Institutes of Health, Office of Dietary Supplements. Current NIH ODS reference; accessed 6 September 2026.
Supports: Arginine and glutamine exercise-performance evidence and limitations; not a tyrosine outcome monograph.
- Safe Use of Complementary Health Products and Practices
National Center for Complementary and Integrative Health. Current NCCIH reference; accessed 6 September 2026.
Supports: General safety, interaction and contamination context. It does not establish ingredient-specific benefit.
Change history
| Date | Change | Clinical-review status |
|---|---|---|
| 6 September 2026 | Source-linked reference published | Pending |
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