Natural Factors - Mental Calmness 100 mg, Stress-Relax® - 120 Chewable Tablets

There’s a reason why drinking a cup of tea is so relaxing. True tea (made from the Camella sinensis plant) contains L-theanine, an amino acid that helps to temporarily promote relaxation. (In fact, the tea plant was formerly called Thea sinensis!)

Suntheanine® is a purified, clinically researched, and patented form of L-theanine supported by more than 50 studies demonstrating its safety and efficacy. It relaxes but won’t cause drowsiness.