R-Lipoic Acid is the most active isomer of alpha-lipoic acid, which is a versatile antioxidant.* It has important characteristics that contribute to liver, nerve, and eye health.* 
Alpha-lipoic acid occurs naturally as a 50/50 mixture of R-lipoic acid (R-ALA) and S-lipoic acid (S-ALA). R-lipoic acid by itself functions as an essential cofactor for many enzymes involved in energy production.* It also has characteristics, including significant antioxidant effects, that help contribute to liver, brain, nerve, and eye health.* Studies indicate that supplements containing only R-lipoic acid appear to be better absorbed than supplements containing both R-lipoic acid and S-lipoic acid, with results showing twice as much ALA appearing in the bloodstream after an oral dose of R-Lipoic acid.* Because R-Lipoic acid is the form best utilized by the body, Thorne provides R-lipoic acid bound to sodium, providing it in its most stable, absorbable form.*
• Brain/Nerves*
• Liver/Detox*
Best For
R is best for everyday wellness, nutritional gaps, and whole-body health support. It is especially well-suited for individuals seeking a professional, practitioner-vetted supplement as part of a holistic wellness routine.
How to Use
Take as directed on the label or by your healthcare practitioner. Always follow the label directions or guidance from your healthcare provider. Do not exceed the recommended dose.
Frequently Asked Questions
Is R third-party tested? All products at Healthy Solutions For All meet practitioner-grade standards for purity and potency.
Who recommends this product? R is curated by Michelle Tonkin ND and Melissa Tonkin CNC, twin sisters with 20+ years of holistic clinical experience.
Can I get personalized guidance? Yes — book a free 10-minute consultation to find out if this product is right for your health goals.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.