The absorption and metabolism of γ-aminobutyric acid(GABA) in rat were investigated by using 14 C autoradiograph and quantitative analysis method. The results showed that after administrated with 1mg/g body weight GABA to the 6~7 weeks old Wister rats, GABA in the liver increased to the highest level after 1 hour, GABA in the plasm and kidney reached the highest level after 3 hours, while GABA in the brain almost remained at the same level. γ- hydroxybutyric acid(GHBA) was one of the major m...