Safety Profile
Overall safety rating: Generally Safe
Alpha-Lipoic Acid Side Effects & Safety
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Potential Side Effects
- GI symptoms (nausea, stomach upset) — the most common side effect, especially at higher doses
- Hypoglycemia risk when combined with diabetes medications
- Skin rash in rare cases
- May produce a sulfurous body odor at high doses
- Can mobilize stored heavy metals — use cautiously if mercury amalgam fillings are present
Drug & Supplement Interactions
- Diabetes medications (insulin, metformin, sulfonylureas) — additive blood sugar lowering; monitor glucose closely
- Thyroid medications (levothyroxine) — ALA may lower thyroid hormone levels; separate dosing by 4+ hours
- Chemotherapy — ALA is a potent antioxidant that could theoretically reduce efficacy of oxidative chemotherapy; consult oncologist
- Heavy metal chelation therapies — ALA has chelation properties; coordinate with practitioners
Maximum Dose
Do not exceed: 1200mg/day (doses used in clinical trials; higher doses may cause GI issues)
References
- Ziegler D, Ametov A, Barinov A, et al. (2006). Oral treatment with alpha-lipoic acid improves symptomatic diabetic polyneuropathy: the SYDNEY 2 trial. Diabetes Care. DOI PubMed
- Ansar H, Mazloom Z, Kazemi F, Hejazi N (2011). Effect of alpha-lipoic acid on blood glucose, insulin resistance and glutathione peroxidase of type 2 diabetic patients. Saudi Medical Journal. PubMed
- Shay KP, Moreau RF, Smith EJ, Smith AR, Hagen TM (2009). Alpha-lipoic acid as a dietary supplement: molecular mechanisms and therapeutic potential. Biochimica et Biophysica Acta. DOI PubMed