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correlational
positive effect
Taking 3 grams of glycine before bed might help people feel less sleepy during the day.
Scientific Claim
Glycine ingestion at 3 grams before bedtime is associated with reduced daytime sleepiness in individuals with chronic sleep dissatisfaction, as measured by daytime sleepiness assessments.
Source Excerpt
“Glycine lessened daytime sleepiness and improved performance of memory recognition tasks.”