Inositol is one of the most versatile nutrients for promoting brain wellness, a positive and relaxed outlook, and restful sleep. It also is one of the most crucial nutrients for promoting female hormonal health through its role in supporting optimal liver function. Inositol also helps maintain healthy serotonin metabolism, and by so doing helps treat many conditions that involve poor serotonin function. Serotonin is optimized when this is combined with 5-HTP. Optimizing serotonin and dopamine levels is a well known method of treating depression naturally.