J.R. S. answered 02/14/20
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
Why use methylated GABA when beta-phenyl-gamma-aminobutyric acid (hydrochloride salt) has already been made and tried. Also, the niacin analogue of GABA has been used successfully to increase brain GABA levels. Not sure the methyl derivative would work, but it may.