Alpha-Lipoic Acid (ALA)

What is Alpha-Lipoic Acid?

Alpha-Lipoic Acid (ALA) is a sulphur-containing compound produced in small amounts by the body and found in foods like organ meats, spinach and broccoli. It's sometimes called the "universal antioxidant" because, unlike most antioxidants that are either fat-soluble or water-soluble, ALA is both — allowing it to work throughout the cell, in membranes and in the watery cytoplasm alike, and to cross the blood-brain barrier.

Mitochondrial & Glycation Research

ALA plays a natural role as a cofactor in mitochondrial enzyme complexes involved in energy metabolism, and research has specifically examined its role in countering glycation — the process by which sugar molecules bind to proteins (including collagen) and stiffen tissue over time, a well-documented contributor to skin aging and reduced tissue elasticity. A notable human study found ALA supplementation restored early age-related sensory and endothelial (blood vessel lining) dysfunction in skin, directly linking it to functional anti-aging outcomes rather than just antioxidant markers.

Metabolic Research

ALA is separately well studied for supporting healthy blood sugar metabolism and nerve function, and has decades of clinical use (particularly in Europe) for diabetic neuropathy, which is part of why its safety profile is unusually well characterised for a longevity-adjacent supplement.

Dosing Guidelines

• Typical studied range: 300–600mg daily, often split into two doses
• R-ALA (the naturally occurring isomer) is generally considered more bioactive than synthetic racemic mixtures
• Take on an empty stomach for better absorption, per most study protocols
• Those on blood-sugar-lowering medication should check with a doctor, since ALA can have an additive effect