The common source of vitamins was the foods that we ate. I just wanted to know more about.... Vitamin sources. • Vitamin A: beef, fish liver oils, chicken liver, eggs, whole milk... • Thiamine (vitamin B1): brewer's yeast, meats, poultry, whole grain cereals, nuts, legumes... • Riboflavin (vitamin B2): asparagus, milk, lean meat, green leafy vegetables, mushrooms, oysters... • Vitamin B3 (niacin):beef liver and kidney, beets, brewer's yeast, pork, turkey, chicken, veal, fish... • Vitamin B5: organ meats, eggs, fish and shellfish, lobsters, poultry, soybeans, lentils... • Vitamin B6 (pyridoxine): grains, bread, liver, cereals, spinach, green beans, and bananas... • Vitamin B12: cottage cheese, eggs, liver, tuna, yogurt... • Amygdalin (vitamin B17): apple, nectarine apricot, peach,cherry, orange, plums... • Beta-carotene: apricots, carrots, cantaloupe, pumpkin, sweet potatoes, winter squashes... • Inositol: wheat germ, brewer's yeast, bananas, liver, brown rice oak flakes...