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descriptive
neutral effect
Taking 3 grams of glycine before bed doesn't seem to cause any immediate negative side effects, according to the study.
Scientific Claim
Ingestion of 3 grams of glycine before bedtime is associated with no adverse events in individuals with chronic sleep dissatisfaction, as measured by the assessment of acute adverse events.
Source Excerpt
“Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse events of glycine ingestion at high doses in human volunteers. J. Urban Life Health Assoc. 2006; 50: 27–32.”