A study titled 'Somato® (Phytomelatonin) Versus Synthetic Melatonin and Placebo on Sleep Quality' has been completed. Its objective was to compare the effects of different types of melatonin and a placebo on sleep quality. The interventions examined included plant-based melatonin (Somato®), synthetic melatonin, and a placebo. All these substances were administered as dietary supplements. The study was sponsored by Nutraland USA, Inc. and Reputable Health. It focused on sleep conditions. The study is now concluded.