For that Feeling of Well Being! The B-Vitamin Complex is made up of several B vitamins that work well together to support nervous system health.** This product combines Vitamins B-1 (Thiamin), B-2 (Riboflavin), B-3 (Niacin), and B-12,  from natural sources. B-Complex vitamins are involved in energy metabolism and help maintain the health of nerves and heart health.** The Vitamin B-12 helps in the  normal formation of red blood cells.**