Possible side effects of alpha-lipoic acid include drowsiness, blurred vision, sweating and hunger. Other possible side effects include weakness, headache, a fast heart rate, and feeling close to fainting. Some people may experience irritability, nausea, tremors or tiredness, according to Drugs.com.Continue Reading
Confusion or have trouble concentrating may occur when taking alpha-lipoic acid. Other possible side effects include numbness or tingling, dizziness, muscle cramps and mild skin rash. Signs of an allergic reaction to alpha-lipoic acid include difficulty breathing, hives and swelling of the throat, lips, face or tongue, states Drugs.com.
Because alpha-lipoic acid may lower blood sugar levels, people with diabetes and other related conditions should watch their blood sugar levels carefully when taking it. The effects of alpha-lipoic acid on pregnant or nursing women is unknown, as of 2015. For this reason, pregnant or nursing women should avoid alpha-lipoic acid to be safe, notes WebMD.
Serious health risks are associated with taking alpha-lipoic acid with a thiamine deficiency. People with low thiamine levels should take a supplement. People who drink alcohol regularly should take a thiamine supplement when taking alpha-lipoic acid. Alpha-lipoic acid may interfere with over or under-active thyroid treatments, according to WebMD. Chemotherapy agents may be less effective in people who use alpha-lipoic acid.Learn more about Side Effects