Although each enzyme has its own specific function in the body, they tend to work synergistically when taken in combination. Because of their variety of origins and substrates, wide ranges of optimal temperatures and pH levels, increased percentage of absorption, and increased level of effectiveness, enzyme blends have a wider range of advantages than do individual enzymes. Additionally, when enzymes are taken in combination with vitamins, minerals, herbs or phytonutrients (naturally occurring nutrients found in plants) the combination improves absorption and bioavailability of the ingredients.