Vitamin A or Retinol: helps in treating eye disorders, acne, skin disorders, infections, and also helps in healing of wounds.
Vitamin B1 or Thiamine: It is very good for heart diseases, indigestion, body metabolism, blood circulation and brain development.
Vitamin B2 or Riboflavin: Treats Cataract, skin disorders, builds up body metabolism, immunity and nervous system.
Vitamin B3 or Niacin: It is very beneficial in treating problems related to Weakness, digestion, nervous system, skin disorders, migraine, heart disorders, high blood pressure, high blood cholesterol, diabetes, diarrhea
Vitamin B5 or Pantothenic Acid: Stress, arthritis, infections, skin disorders, high cholesterol can be avoided by vitamin B5.
Vitamin B6 or Pyridoxamine: This vitamin helps treating the diabetes, piles, convulsions, excessive menstrual bleeding, stress, insomnia
Vitamin B7 or Biotin: Skin disorders, body metabolism, hair care problems can be easily solved by biotin.
Vitamin B9 or Folic Acid: Folic acid is recommended for anemia, digestion, brain growth, skin disorders, gout, red blood cell formation.
Vitamin B12 or Cyanocobalamin: Various problems related to smoking, pregnancy, liver disorders, kidney disorders, mouth ulcers can be treated by using vitamin B12.
Vitamin C or Ascorbic Acid: This vitamin is effective in treating problems related to Eye disorders, cancer, scurvy, common cold, infections, stress, high blood cholesterol, heart diseases, cancer, high blood pressure.
Vitamin D: Vitamin D is good for patients who are suffering from problems like rickets, arthritis, tooth decay, bone repair, immunity, blood pressure and diabetes.
Vitamin E or Tocopherol: Anti-aging, skin care, heart diseases, blood circulation, sterility, brain function, menopause, painful menstrual cycles, eye disorders ca be treated with the help of vitamin E.
Vitamin K: Vitamin K helps in stopping Internal bleeding, blood clotting, biliary obstruction, osteoporosis, excessive menstrual flow and menstrual pain.
Reference – http://www.organicfacts.net/health-benefits/vitamins/health-benefits-of-vitamins.html