What is the common dosage and side effects of alpha-lipoic acid?

Not Medical Advice:

The common dosage for Alpha Lipoic Acid is 600 milligrams once daily. High dosages of alpha lipoic acid have side effects that include insomnia and heart rhythm problems. Other side effects may include headache, tingling or a "pins and needles" sensation, skin rash, or muscle cramps.

Alpha lipoic acid (ALA) is a powerful, natural antioxidant that benefits the treatment and prevention of a broad range of diseases. ALA also helps the body use glucose, which could improve blood sugar control and benefit people with diabetes.

Animal studies have indicated that alpha lipoic acid can alter thyroid hormone levels, so it could reasonably have the same effect in humans. A new study released in July 2012, has suggested that taking alpha lipoic acid supplements may boost memory, but might shorten your lifespan.