Back to Study: Glycine ingestion improves subjective sleep qualit...
causal
neutral effect
Taking 3 grams of glycine before bed doesn't make people feel sleepy during the day.
Scientific Claim
A single 3g dose of glycine before bedtime does not produce acute daytime sleepiness in adults with chronic poor sleep.
Source Excerpt
“We have previously reported that glycine ingestion during daytime does not produce acute sleepiness.”
Evidence from Studies
Supporting Studies
Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes
Crossover Trial
View study →30%
Evidence Assessment
Supported
The study references previous research showing glycine ingestion during daytime does not produce acute sleepiness. This is consistent with the current study's findings of reduced daytime sleepiness after nighttime glycine ingestion.