Pure L-Arginine Powder, 10.6 oz (300 g)
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| L-Arginine Hydrochloride | 6 g |
Certifications & Testing
Other Ingredients
None
Recommended Use
Suggested Adult Use: Mix 1 level scoop in 8 oz. juice or beverage of your choice daily, or as recommended by a nutritionally-informed physician.
Warnings
Warning: Not intended for individuals under the age of 18. Consult your physician if pregnant, nursing, have a medical condition, taking nitrates, warfarin, sildenafil (Viagra), medications for hypertension, diabetes, or other supplement that may lower blood pressure while taking in concomitant with this product. Keep out of reach of children.
Frequently Asked Questions
What is Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g)'s Formulate score?
Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g) scores 88 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g) worth it?
Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g) scores 88/100 (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 Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g)?
Each serving contains L-Arginine Hydrochloride (6 g). Serving size: 6 Gram(s). 50 servings per container.
How do I take pure l-arginine powder, 10.6 oz (300 g)?
Suggested Adult Use: Mix 1 level scoop in 8 oz. juice or beverage of your choice daily, or as recommended by a nutritionally-informed physician.
Who makes Pure L-Arginine Powder, 10.6 oz (300 g)?
Pure L-Arginine Powder, 10.6 oz (300 g) is made by Doctor's Best. See Formulate's full grade and product lineup for Doctor's Best on its brand page.
Is Doctor's Best Pure L-Arginine Powder, 10.6 oz (300 g) third-party tested?
Doctor's Best lists the following certifications and testing for this product: Non-GMO, Gluten-Free, Vegan, Vegetarian.
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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.