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correlational
mixed effect
Taking glycine before bed might help sleep in a different way than common sleep medications, according to sleep monitoring and self-reports.
Scientific Claim
Glycine ingestion (3 g) before bedtime was associated with different effects on sleep quality compared to traditional hypnotic drugs such as benzodiazepines in individuals with chronic unsatisfactory sleep, as measured by polysomnography and subjective assessments.
Source Excerpt
“Thus, a bolus ingestion of glycine before bedtime seems to produce subjective and objective improvement of the sleep quality in a different way than traditional hypnotic drugs such as benzodiazepines.”