a full description of all known vitamins and some other micronutrients with tables of recommended daily intakes, deficiency symptoms, requirements, beneficial effects, precautions, therapeutic uses, tables of food sources. what are vitamins - do we need vitamins - should we take vitamin supplement s- can vitamins be dangerous - how much vitamins should we take - natural or synthetic vitamins - when and how to take supplements - choosing your supplement - absorption and bioavailability - when buying vitamins - vitamin a - vitamin d - vitamin e - vitamin c - thiamine - riboflavin - niacin - pantothenic acid - vitamin b6 - vitamin b-12 - folic acid - biotin - vitamin - ,choline - inositol - para amino benzoic acid - bioflavonoid - omega-3 - omega-6 - coenzyme q10 - vitamin rich foods.