Sleep Solution (single dose liquid) contains a unique blend of magnesium, glycine, theanine and melatonin in a convenient, single-serving liquid delivery system to offer broad-spectrum support for occasional sleeplessness. The formula targets both emotional and muscle relaxation, as well as sleep onset and quality to encourage restful sleep throughout the night. In addition, glycine and magnesium are included to support muscle relaxation and a healthy sleep cycle. In a small study involving sleep deprived volunteers, 3 g of the inhibitory neurotransmitter glycine enhanced subjective sleep quality, sleep onset time and daytime alertness. Melatonin also facilitates the onset of sleep and sleep efficiency. l-Theanine promotes relaxation and to moderates occasional stress. Research indicates that l-theanine enhances alpha wave production in the brain, an indication of relaxation. Xylitol is included in the formula for its sweetening and dental health properties, including support for salivary pH and mineral concentrations to promote microflora balance and tooth mineralization.