Gamma-aminobutyric acid is found in grains such as brown rice and in root and leafy foods such as mulberry leaves. γ-Aminobutyric acid is a transmitter in mammals, which can be chemically synthesized or biosynthesized, and can also be scientifically extracted from food, and it is found in a variety of foods in daily life. For example, brown rice, germ, rice bran and other cereals; mulberry leaves, black tea, oolong tea, spinach, potatoes, sweet potatoes, yams and other root and leafy foods. It should be noted that although the above foods contain varying amounts of gamma-aminobutyric acid, it is very limited to supplement gamma-aminobutyric acid through the intake of the above foods alone, after all, the absolute content in food is very small, and the amount of daily diet is also limited. If supplementation is needed, it should be carried out according to the doctor’s advice after the condition is clarified, and should not be taken blindly by oneself.