By supplementing your diet with glycine or pure amino acids, you are saving your body the necessary step of breaking down protein into amino acids, and glycine in powdered form can be absorbed even faster. Factors such as diet, illness, stress, and age can inhibit a person's ability to break down proteins into individual amino acids. This can affect the rate of protein formation and the production of new cells. It is recommended in adults to take half a teaspoon (one level tablespoon) daily mixed with food or liquid. Keep the bottle tightly closed. Keep it away from heat and moisture.