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descriptive
neutral effect
Taking 3 grams of glycine before bed doesn't change the overall structure of sleep stages.
Scientific Claim
Glycine ingestion at 3 grams before bedtime does not alter sleep architecture in individuals with chronic sleep dissatisfaction, as measured by polysomnography.
Source Excerpt
“Glycine improved subjective sleep quality and sleep efficacy (sleep time/in-bed time), and shortened PSG latency both to sleep onset and to slow wave sleep without changes in the sleep architecture.”