The B-vitamin complex consists of eight essential vitamins that play a crucial role in maintaining overall health. These vitamins include B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), and B12 (cobalamin). Each vitamin has unique functions, such as energy production, red blood cell formation, and supporting the nervous system. These vitamins are commonly found in a variety of foods, including whole grains, meat, eggs, dairy products, legumes, and leafy greens. A balanced diet typically provides sufficient amounts of these vitamins, but deficiencies can occur, leading to health issues. Supplementation may be necessary for certain individuals, especially those with dietary restrictions or specific health conditions.