A multivitamin is a nutrient supplement formulated to contain vitamins, nutritional minerals and other nutritional components. This is available in pills, capsules, pastilles, powders, liquids or injectable formulas. Such preparations are also available. A mixture of several multiple vitamins usually present in foods and other natural products are multivitamins. Multivitamins are employed to supply non-dietary vitamins. A vitamin deficiency (lack of vitamins) caused by cancer, breastfeeding, inadequate diet, metabolic problems and many other illnesses are often managed with multivitamins.