vitamin b pyridoxine is involved in more human functions than any other single nutrient. Pyridoxine helps the body convert protein, fat and carbohydrates into energy. It also plays a key role in maintaining immune and nervous system health, regulating hormone production, and preventing red blood cells from forming dangerous blood clots. In addition, it can prevent heart disease by inhibiting the formation of homocysteine that allows cholesterol to deposit in the heart muscle.