Green-tea amino acid that promotes calm focus without sedation.
Buy L-TheanineDosing range
100–400 mg
Timing
flexible
Avoid if:
Drug interactions:
Always consult a healthcare provider before starting any new supplement, especially if you take prescription medications.
We link to vetted brands with third-party testing.
Buy L-Theanine →Affiliate link — we may earn a commission. Price and availability set by the retailer.
Glycine is an amino acid that has emerged as a powerful sleep aid, with clinical studies showing it can improve sleep quality, increase time spent in deep sleep, and help you fall asleep faster.
Learn how to optimize sleep quality with a targeted four-supplement stack backed by clinical research, designed to support relaxation, sleep onset, and restorative rest.
L-theanine is an amino acid found in tea leaves that promotes relaxation without drowsiness. Research shows it can improve sleep quality by reducing anxiety and enhancing alpha brain wave activity.
