Alpha-Lipoic Acid
Works in water and fat
- Type
- Antioxidant
- Typical amount
- Studies commonly use 300–600 mg per day.
- Best taken
- As directed on the formula label
- Caffeine
- None
- Main source
- Small amounts occur in foods such as spinach, broccoli and organ meats; supplements provide far more.
- Evidence level
- Moderately studied
Alpha-lipoic acid is a sulphur-containing antioxidant made in the body and active in both water and fat environments.
What is Alpha-Lipoic Acid?
Alpha-lipoic acid is a sulphur-containing antioxidant made in the body and active in both water and fat environments.
How Alpha-Lipoic Acid works in the body
It is studied for supporting glucose metabolism, insulin sensitivity and cellular energy production. In practical terms, this is the mechanism weight-loss formulas are counting on when they include alpha-lipoic acid.
What the research says about Alpha-Lipoic Acid and weight
Alpha-Lipoic Acid has a moderate body of research — some human trials plus supporting lab and animal work. The findings are promising but not definitive, and effect sizes are usually modest. Treat it as a reasonable supporting ingredient rather than a proven stand-alone solution.
How much Alpha-Lipoic Acid to take
Studies commonly use 300–600 mg per day. Always check the label of your specific formula — blends often contain less alpha-lipoic acid than studies use, especially inside proprietary blends that don’t disclose exact amounts.
Food sources and supplement forms
Small amounts occur in foods such as spinach, broccoli and organ meats; supplements provide far more.
Why Alpha-Lipoic Acid appears in weight-loss formulas
It appears in metabolic formulas for its glucose and antioxidant research and its unique dual solubility.
Safety, side effects and interactions
Generally well tolerated; high doses can cause mild stomach upset and may lower blood sugar. As with any supplement, if you are pregnant, breastfeeding, taking medication or managing a health condition, check with your doctor first.
How to choose a quality Alpha-Lipoic Acid supplement
When choosing a Alpha-Lipoic Acid product or a formula containing it, look for one that discloses the actual amount of alpha-lipoic acid (not just a proprietary-blend total), uses a recognizable form, and is made by a brand with third-party testing or GMP manufacturing. More isn’t always better — match the dose to what research and the label suggest, and be wary of products that hide quantities behind a blend.
Works in water and fat
ALA is unusual among antioxidants because it is active in both watery and fatty parts of cells — sometimes called the “universal antioxidant.”
Common questions about Alpha-Lipoic Acid
What does Alpha-Lipoic Acid do for weight loss?
How much Alpha-Lipoic Acid should I take?
Is Alpha-Lipoic Acid safe?
How strong is the evidence for Alpha-Lipoic Acid?
Will Alpha-Lipoic Acid alone make me lose weight?
Does the dose in supplements match research?
Supplements with Alpha-Lipoic Acid
Formulas in the SourceLean directory that list Alpha-Lipoic Acid or a closely related form among their ingredients:
Related ingredients
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Ingredient insights, explained
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