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What are the risks of taking alpha-lipoic acid?
Side effects. Generally, side effects are uncommon. These supplements could cause nausea, dizziness, or a rash. Topical alpha-lipoic acid can irritate the skin.
Risks. Because alpha-lipoic acid can lower blood sugar, check with a doctor before using it if you have diabetes. Your doctor might want to test your glucose levels regularly while you use alpha-lipoic acid supplements. If you have thyroid problems, a thiamine deficiency, or any other medical issue, talk to your doctor before you start taking alpha-lipoic acid supplements.
Interactions. If you take any medicines or supplements regularly, see your doctor before you start using alpha-lipoic acid. People with diabetes need to be especially careful. Using it along with diabetes drugs could make blood sugar levels drop too low. Alpha-lipoic acid might decrease the effect of chemotherapy drugs. It could also interact with antibiotics, anti-inflammatories, tranquilizers, vasodilators, and drugs for osteoarthritis.
Given the lack of evidence about its safety, alpha-lipoic acid is not recommended for children or for women who are pregnant or breastfeeding.