topicL-Serine Sleep Quality Randomized Trial
claimIn Study 1, factors related to "sleep initiation" and "sleep maintenance" during the L-serine intake period were significantly improved compared to the placebo intake period (p = 0.02 and p = 0.008, respectively).
evidence level4
citationIto Y (2014)
sourceEffects of L-serine ingestion on human sleep.