Top pick1NOW Foods L-Theanine Double Strength 200 mgGreen-tea amino acid for calm, non-sedating relaxation✓Non-sedating calm - useful for a racing mind at bedtime✓Strong safety and tolerability record at the studied 200 mg dose✓RCT evidence for reduced stress and improved sleep-quality scores✓Daily oral tablet7.6/10Editorial scoreSee offer →Read review+ Pin to compare
2Runner-upNOW Foods Glycine Pure PowderClinical-dose glycine for better subjective sleep quality✓Backed by published clinical trials on the ~3 g bedtime dose✓Single ingredient with no fillers, sweeteners, or proprietary blends✓Extremely low cost per serving✓Daily oral tablet7.4/10Editorial scoreSee offer →Read review+ Pin to compare