For other uses of the word, see discursive. Discursive Psychology (DP) is a form of discourse analysis that focuses on psychological themes in talk, text and images.
The vitamins include vitamin D, vitamin E, vitamin A, and vitamin K, or the fat-soluble vitamins, and folate (folic acid), vitamin B12, biotin, vitamin B6, niacin, thiamin, riboflavin, pantothenic acid, and vitamin C (ascorbic acid), or the water-soluble vitamins.
Vitamin tablets on a table. Vitamins come in two varieties: water soluble and fat soluble. Water soluble vitamins, such as B complex vitamins and vitamin C, dissolve in water and are excreted through the kidneys if you have excess amounts in your body. Fat-soluble vitamins--namely vitamins A, D, E and K--dissolve in fat and are stored in fat throughout the body.