100–200 mg taken one to three times daily.
Theanine has been shown to lower blood pressure in some clinical studies. L-Theanine: Dosage, Benefits, and Side Effects - Healthline buy l theanine
L-theanine is an amino acid primarily found in tea leaves that promotes "wakeful relaxation" and calm focus. It is widely used to manage anxiety, improve sleep quality, and smooth out the jitters often caused by caffeine. 100–200 mg taken one to three times daily