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Sodium bicarbonate

Sodium bicarbonate (baking soda) is a supplement that provides dietary bicarbonate, which can increase serum levels of bicarbonate (normally produced by the kidneys) and subsequently buffer acid production in the body. The main mechanism of action of sodium bicarbonate is in negating the effects of acidosis. It provides benefits both in situations of chronic mild acidosis, commonly seen in metabolic ailments or during aging as kidney function slowly declines, and in exercise-induced acidosis.

Supplemental dosages of sodium bicarbonate are in the 200-300 mg/kg range when used before exercise. Although 500 mg/kg is slightly more effective, it tends to be associated with a higher degree of intestinal side effects if taken all at once.