Vitamin B6 is a water-soluble vitamin that plays a crucial role in many bodily functions. It helps the body convert food into energy and is essential for the production of neurotransmitters, which are chemicals that transmit signals in the brain. This vitamin also supports immune function and helps in the formation of red blood cells. You can find Vitamin B6 in various foods, including poultry, fish, potatoes, and bananas. A balanced diet usually provides enough of this vitamin, but some people may need supplements, especially those with certain health conditions or dietary restrictions.