L-Arginine Plus
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne L-Arginine Plus
Maintain healthy blood pressure and support healthy aging with L-arginine and added antioxidant support* L-Arginine Plus supports blood flow to the extremities to benefit exercise capacity, collagen formation, and sexual wellness, with added antioxidant support for healthy aging and heart health.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| L-Arginine | 2 g |
| Green Tea Phytosomedecaffeinated / Phospholipid complex from Sunflower | 400 mg |
| Trans-Resveratrol | 100 mg |
| Vitamin CAscorbic Acid | 600 mg |
| R-Lipoic AcidSodium | 100 mg |
| FolateL-5-MTHF | 1840 mcg DFE |
Certifications & Testing
Other Ingredients
High and Low Viscosity Hydroxypropyl Methylcellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide
Recommended Use
Take 3 capsules two times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS 5-methyltetrahydrofolate (5-MTHF) supplementation is not recommended concurrent with methotrexate cancer therapy, as it can interfere with methotrexate's anti-neoplastic ac
Frequently Asked Questions
What is Thorne L-Arginine Plus's Formulate score?
Thorne L-Arginine Plus scores 91 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne L-Arginine Plus worth it?
Thorne L-Arginine Plus scores 91/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne L-Arginine Plus?
Each serving contains L-Arginine (2 g), Green Tea Phytosome (400 mg), Trans-Resveratrol (100 mg), Vitamin C (600 mg), and more. Serving size: 3 Capsules. 60 servings per container.
How do I take l-arginine plus?
Take 3 capsules two times daily or as recommended by your health-care practitioner.
Who makes L-Arginine Plus?
L-Arginine Plus is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne L-Arginine Plus third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.