Quality, Purity, Potency With OptiMSM Reduces Stress · Promotes Relaxation Dietary Supplement Since 1994 Enhancing Nature's Miracles Made The Way Nature Intended! Paradise Optimized Sun Theanine contains the addition of OptiMSM for maximum absorption and synergistic activity, the leading patented MSM chosen by health professionals and people worldwide. L-Theanine (Sun Theanine) is an amino acid that has been shown to reduce stress and promote relaxation without inducing drowsiness. Research also suggests that it may have an application in supporting learning and concentration, enhancing mental acuity, supporting normal cholesterol, blood pressure, controlling PMS and promoting normal weight management.