Vitamin B6, also known as pyridoxine, acts as a catalyst to help the body use and store energy from protein and carbohydrates in food as well as contribute to the production of hemoglobin, a substance in red blood cells that carries oxygen throughout the body. Many foods in daily meals contain vitamin B6, which is recommended to prevent vitamin B6 deficiency. At the same time, when taking supplements, it is important not to take too much to avoid the risk of vitamin B6 toxicity.