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Vitamin B complex is composed of the 8 essential vitamins. These are B1, B2, B3, B5, B6, B7, B9, and B12. They all have a crucial role in the well-being of an individual. Besides carrying out important cellular functions they are also needed to maintain health. It is important to have adequate levels of these vitamins as the deficiency can lead to various signs and symptoms like lethargy, weakness, dry skin and rashes, tongue ulcers, depression, irritability, bowel irregularity, anaemia, numbness in the extremities associated with tingling, prone to infections, etc.Nutrients play a crucial role in the human body right from growth and development to day-to-day functions. In nutrients, one such essential and a micronutrient is a Vitamin. There are 13 types of vitamins in humans of which, 9 are water-soluble and 4 are fat-soluble. The fat-soluble vitamins are A, D, E & K. Group of B and C vitamins are water-soluble.