https://pubmed.ncbi.nlm.nih.gov/30707852/?hopId=2698204f-a880-4b6b-b571-e82d14f92001
GABA/l-theanine mixture has a positive synergistic effect on sleep quality and duration as compared to the GABA or l-theanine alone. The increase in GABA...
l theaninesleep latencygabamixtureimproves