Conventional alpha lipoic acid supplements feature a 50-50 racemic blend of R and S isomers, but the R isomer is the only form that occurs naturally in the human body, and it's the form responsible for most of alpha lipoic acid's beneficial effects.
Swanson's most effective alpha lipoic acid supplement to date
Isolates the R-isomer, the only form found naturally in the body for enhanced benefit
Stabilised form of R-alpha lipoid acid