Stabilized R-Lipoic Acid, 100mg – 180 vcaps

Doctor’s Best Stabilized R-Lipoic Acid delivers 100 mg of R-Lipoic Acid per veggie capsule, sourced from Na-RALA (sodium R-alpha lipoate). This stabilised sodium salt form is used because pure R-Lipoic Acid is an inherently unstable molecule, prone to degradation when exposed to heat, light, or moisture — Na-RALA addresses this by remaining stable at higher temperatures. Each capsule also contains 150 µg of D-Biotin. The product comes in a 180-capsule bottle, with one veggie capsule constituting a serving.

R-Lipoic Acid is the naturally occurring form of alpha-lipoic acid, a sulphur-containing fatty acid that acts as a co-enzyme in carbohydrate metabolism and plays a role in the cellular processes involved in energy production from glucose. It is distinct from S-Lipoic Acid, its mirror-image isomer, and is the form synthesised naturally by humans, animals, and plants.

Doctor’s Best is a well-regarded US supplement brand with a focus on science-backed formulations and quality manufacturing standards. These veggie capsules are free from animal-derived ingredients, making them well suited to those following a vegan or vegetarian lifestyle.