description Alpha-Lipoic Acid Overview
Alpha-lipoic acid is a naturally occurring organosulfur compound synthesized by plants, animals, and humans, functioning as a vital coenzyme in cellular energy metabolism. As an antioxidant, it is distinct because it is soluble in both water and fat, allowing it to interact with various cellular environments. It is known to help regenerate other natural antioxidants, such as vitamin C and glutathione, after they have been spent. It is widely available as an over-the-counter dietary supplement and is studied for its effects on diabetic neuropathy.
help Alpha-Lipoic Acid FAQ
What is alpha-lipoic acid?
Alpha-lipoic acid is an organosulfur compound that the human body makes and uses as a cofactor in mitochondrial energy metabolism. It is different from alpha-linolenic acid, the omega-3 fatty acid found in foods such as flaxseed.
Why is alpha-lipoic acid described as both water- and fat-soluble?
ALA can act in both aqueous and fatty parts of cells, unlike vitamin C, which is water-soluble, or vitamin E, which is fat-soluble. That property explains its antioxidant interest, but it does not prove that a supplement treats a disease. [NIH supplement label database](https://dsld.od.nih.gov/label/332407)
Does alpha-lipoic acid treat diabetes or diabetic neuropathy?
It has been studied for blood sugar and diabetic neuropathy, but the evidence depends on the condition and is not a substitute for prescribed care. People should not replace insulin or other diabetes treatment with ALA. [NCCIH diabetes supplement guidance](https://www.nccih.nih.gov/health/diabetes-and-dietary-supplements-what-you-need-to-know)
Can alpha-lipoic acid interact with medication?
It may affect blood glucose, which matters for people using insulin or sulfonylureas. Discuss it with a clinician before taking a supplement, especially when managing diabetes, thyroid disease, or other long-term conditions.
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