L-Arginine Plus

product on market Capsule Thorne 🟢 Safety: 94/100
Brand: Thorne
🟢 94/100

This product looks safe

  • Folate: 920mg is 920.0× the Tolerable Upper Intake Level (1.0mg)
  • 33% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Folate: 920mg is 920.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

3 Capsule(s) Serving Size
60 Servings
Other Combinations Product Type
33% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
300 mg (333% DV)
920 mcg DFE (230% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 920.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 920mg UL 1.0mg
1 Gram(s)
📊 Market median: 500.0mg (143 products)
This product: 1mg
Greenselect
200 mg
Bio-Enhanced
50 mg
50 mg
📊 Market median: 167.0mg (311 products) 📚 182 studies (Tier A: 0, B: 65)
This product: 50mg

Other Ingredients

high and low viscosity Hydroxypropyl Methylcellulose Hypromellose Leucine Silicon Dioxide

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (100% of products) Structure/Function (91% of products) Nutrient (35% of products)

Target Groups

Adult Male (18-50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested use: Take 3 capsules two times daily or as recommended by your health-care practitioner.

⚠️ Warnings & Precautions

Tamper evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

🧪 Formulation Notes

Circulation Heart/vessels

Men's health

Gluten free

L-Arginine Plus with nutrients for added support

This product uses Gnosis S.p.A.'s L-5-Methyltetrahydrofolic Acid, Glucosamine Salt (Quatrefolic). Quatrefolic is a registered trademark of Gnosis S.p.A. L-Arginine complexed with Time-Sorb, a time-release matrix. This product uses Indena S.p.A.'s green tea phytosome (Greenselect). Greenselect is a registered trademark of Indena S.p.A. This product uses GeroNova Research's Bio-Enhanced R-Lipoic Acid. Bio-Enhanced is a registered trademark of GeroNova Research, Inc.

Additional Information

Store tightly sealed in a cool, dry place.

Manufactured in the USA using US & imported ingredients NSF Contents Certified

Product Details

UPC / SKU 6 93749 52601 8
DSLD Entry Date 2025-08-22
Product Type Other Combinations
Form Capsule
Brand Thorne
DSLD ID 336346
Data Updated 2026-04-11

Research Evidence

45 Research Sources
52 Avg Quality Score
12 Rct
11 Systematic Review
11 Meta Analysis
11 Clinical Trial
A Nitric oxide donors (nitrates), L-arginine, or nitric oxide synthase inhibitors for acute stroke
Meta Analysis The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Arginine supplementation for prevention of necrotising enterocolitis in preterm infants
Meta Analysis The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
B Nutritional interventions for treating foot ulcers in people with diabetes
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI
B Nitric oxide donors (nitrates), L-arginine, or nitric oxide synthase inhibitors for acute stroke
Systematic Review The Cochrane database of systematic reviews 2002
PubMed Cochrane
B Arginine supplementation for prevention of necrotising enterocolitis in preterm infants
Systematic Review The Cochrane database of systematic reviews 2007
PubMed Cochrane
B The Effect of Amino Acids on Wound Healing: A Systematic Review and Meta-Analysis on Arginine and Glutamine
Meta Analysis Nutrients 2021
PubMed DOI
B Nitric oxide donors (nitrates), L-arginine, or nitric oxide synthase inhibitors for acute ischaemic stroke
Systematic Review The Cochrane database of systematic reviews 2000
PubMed Cochrane
B Dietary Supplements for Erectile Dysfunction: Analysis of Marketed Products, Systematic Review, Meta-Analysis and Rational Use
Meta Analysis Nutrients 2023
PubMed DOI
B Arginine supplementation for prevention of necrotising enterocolitis in preterm infants
Systematic Review The Cochrane database of systematic reviews 2004
PubMed Cochrane
B An Analysis of Popular Online Erectile Dysfunction Supplements
Systematic Review The journal of sexual medicine 2019
PubMed DOI
View all evidence for L Arginine →

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