Is extreme theanine a three-no product?
No. According to the query health. Com, theanine is a product launched by health care products company on February 18, 2020. Tested by the national food safety department, and issued a sales license. It is a conventional medicine. Tea polyphenols extracted from tea are the main components of tea polyphenols, which have many functions such as antioxidation, lowering blood pressure and lowering blood lipid.