Pyruvic acid (B4): Pyruvic acid. Pyruvic acid is used by weightlifters and body builders to help produce cellular energy during exercise, which can increase power and strength during resistance training. The use of pyruvic acid and calcium pyruvate may cause side effects, such as gastrointestinal distress, kidney stress, increased cholesterol, and hypercalcemia.
Answered 7/9/2012
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