Medically reviewed by Melissa Nieves, LND L-theanine benefits may include helping you relax, de-stress, and sleep better. L-theanine also shows promise for cognitive and mental health issues, ...

L-theanine is an amino acid found in tea. Although L-theanine is associated with several health benefits, no research confirms if it is effective in treating bipolar disorder. L-theanine is a ...

L-theanine is an amino acid that works on your brain to help you relax. Both these supplements can work independently, but you can combine them to help you sleep. Although the magnesium-theanine ...