Vitamins B1, B6, and B12 are especially important for the health of your nervous system. Vitamin B1 provides energy to nerves. Vitamin B6 is important in metabolism of neurotransmitters – compounds that help nerves communicate with each other. Vitamin B12 is important in the metabolism of the myelin sheath that protects nerves and helps messages go fast through the neurons. Hence, these vitamins help maintain and nourish the nervous system.