Yes, 500mg GABA is the highest value in the safe range. The higher the content, the better the sleep quality, and the more it can stimulate the secretion of growth hormone! I bought amino butyric acid from Yishenggu long-legged deer, the content is just 500mg, and the purity is also very high, which has exceeded 99%. This high-purity and high-content aminobutyric acid is easier for children to absorb and will not increase the burden on the body!