Water-soluble vitamins differ from fat-soluble vitamins having the general characteristics:

1. they must be supplied every day in the diet 2. They do not have precursors 3. they are not stored significantly in the body and any excess is excreted in the urine. except Vit. B 12 (Cobalamin) and Vit. B 6 (Pyridoxine) 4. Deficiency symptoms develop relatively fast 5. Being water-soluble, they are most likely to be destroyed in ordinary cooking. therefore opposite sa fat-soluble, bilat.