Alpha-lipoic acid is an antioxidant made by the body. It is found in every cell, where it helps turn glucose into energy. Antioxidants attack “free radicals,” waste products created when the body turns food into energy. It is also available as a dietary supplement

Alpha-lipoic Acid: An Antioxidant with Anti-aging Properties for Disease Therapy

Numerous in silico, in vitro, in vivo, and clinical studies revealed that αLA shows a protective role in biological systems by direct or indirect reactive oxygen/nitrogen species quenching. αLA demonstrated beneficial properties in the prevention and treatment of many age-related disorders such as neurodegeneration, metabolic disorders, different cancers, nephropathy, infertility, and skin senescence. Its preventive effects in case of Alzheimer’s and Parkinson’s diseases are of particular interest. 

Alpha-Lipoic Acid: Biological Mechanisms and Health Benefits

Results from in vitro and in vivo studies demonstrated that ALA modulates various oxidative stress pathways suggesting its application, alone or in combination with other functional substances, as a useful support in numerous conditions, in which the balance oxidant–antioxidant is disrupted, such as neurodegenerative disorders. Based on several successful clinical studies, it has been also established that oral ALA supplements are clinically useful in relieving the complications of diabetes and other disorders including cardiovascular diseases and nerve discomforts suggesting that ALA can be considered a useful approach to improving our health.

I’ve tried Alpha-lipoic acid myself. My habit is to taste it first, not to swallow a pill. I found it very bitter. Maybe in lower dose in water it’ll taste better.