Neuro-5-HTP Plus™ supplies 5-HTP (L-5-Hydroxy Tryptophan) with L-Theanine and B-vitamin synergists with SOD and catalase. 5-HTP (derived from L-Tryptophan) is converted to serotonin, a key neurotransmitter. L-theanine (from green tea), a derivative of L-glutamic acid, may possess mood-modulating activity as a result of increase production of alpha-brain wave activity.