It was once believed that lactic acid build-up was the cause of muscle fatigue. The assumption was lactic acid had a pickling effect on muscles, inhibiting their ability to contract. The impact of lactic acid on performance is now uncertain, it may assist or hinder muscle fatigue.
Pioglitazone is an anti-diabetic drug (thiazolidinedione-type, also called glitazones) used along with a proper diet and exercise program to control high blood sugar in patients with type 2 diabetes. It works by helping to restore your body's proper response to insulin, thereby lowering your blood sugar.
Pioglitazone is not used to treat type 1 diabetes (condition in which the body does not produce insulin and, therefore, cannot control the amount of sugar in the blood) or diabetic ketoacidosis (a serious condition that may develop if high blood sugar is not treated).