That depends largely on what you hope to get from the supplement, as companies combine L-theanine with various other helpful ingredients to achieve specific goals
A clinical trial for the pill showed that participants who took the full course of treatment over 64 weeks experienced an average weight loss of around 17%, compared to 3% weight loss in a placebo group
History [edit] Descriptions of deficiency effects [edit] Between 1849 and 1887, Thomas Addison described a case of pernicious anemia, William Osler and William Gardner first described a case of neuropathy, Hayem described large red cells in the peripheral blood in this condition, which he called "giant blood corpuscles" (now called macrocytes), Paul Ehrlich identified megaloblasts in the bone marrow, and Ludwig Lichtheim described a case of myelopathy
In: Lipshultz, LI, Howards, SS, Niederberger, CS, eds