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Proc Natl Acad Sci USA 1974
Cool, dark sleeping environments optimize sleep quality
In injection form, higher concentrations can occasionally trigger mild gastrointestinal symptoms nausea, loose stools, or a feeling of stomach heaviness in people who are sensitive to it or who are new to the formula
Please be advised that there is also an additional shipping fee associated with this item because it needs to be refrigerated
Sources American College of Gastroenterology
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