Vitamin B
Vitamin B itself is a complex of different vitamins like: B1, B2, B6, B12, niacin, folic acid, biotin and pantothenic acid. These B vitamins are very important in metabolic activity and in facilitating the red blood cell (which carry oxygen throughout your body). They also help your body make protein and energy.

The sources of vitamin B are leafy green vegetables seafood, beans, peas, citrus fruits, whole grains (such as wheat and oats), poultry, meats, eggs and dairy products (like milk and yogurt). Some bacteria in our large intestine also prepare some type of B-vitamins. The deficiency of vitamin B can cause the disease Beriberi, cracked lips, weak muscles, malformation of red blood cells, affects normal growth and disturbs the nervous system.

Vitamin C
Vitamin C or ascorbic acid is a water-soluble, antioxidant vitamin that is vital to the production of collagen, a protein that gives structure to bones, cartilage, muscle, and blood vessels. It is important for keeping body tissues, such as gums and muscles in good shape and it helps in quick healing of wounds. In addition, it helps protecting the fat-soluble vitamins A and E as well as fatty acids from oxidation. The vitamin C can be found in citrus fruits (like lemon & orange), cantaloupe, strawberries, tomatoes, broccoli, cabbage and other fresh fruits and vegetables. The deficiency of vitamin C affects the healthy skin; poor wound healing and can lead to a disease called "Scurvy" which causes bleeding in gums, easy bruising, bumps of coiled hair on the arms and legs, pain in the joints, muscle wasting, and many other problems.

Vitamin D
Vitamin D is a fat-soluble vitamin that regulates the formation of bone and the absorption of calcium and phosphorus from the intestine. It helps to control the movement of calcium between bone and blood, and vice versa. It is this vitamin you need for strong bones and teeth. In addition it helps your body absorb the amount of calcium it needs.