R-Lipoic Acid
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 |
|---|---|
| R-Alpha Lipoic Acid | 100 mg |
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Vegetarian Capsule, Magnesium Stearate, Silica
Recommended Use
Suggested Usage: 1 capsule 2 times per day or as directed by a health professional.
Warnings
Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery. Keep out of the reach of children. Sealed for your protection. Do not use if seal is broken.
Frequently Asked Questions
What is Natural Factors R-Lipoic Acid's Formulate score?
Natural Factors R-Lipoic Acid scores 75 out of 100 (grade B+) 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 Natural Factors R-Lipoic Acid worth it?
Natural Factors R-Lipoic Acid scores 75/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Natural Factors R-Lipoic Acid?
Each serving contains R-Alpha Lipoic Acid (100 mg). Serving size: 1 Vegetarian Capsule(s). 60 servings per container.
How do I take r-lipoic acid?
Suggested Usage: 1 capsule 2 times per day or as directed by a health professional.
Who makes R-Lipoic Acid?
R-Lipoic Acid is made by Natural Factors. See Formulate's full grade and product lineup for Natural Factors on its brand page.
Is Natural Factors R-Lipoic Acid third-party tested?
Natural Factors lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free, Sugar-Free.
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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.