Swiss kingnature Cui Rui Bao takes effect quickly. You will feel the effect after taking 1-3 months. After taking it continuously for 6 months, you will find that the child's appetite, sleep and language development have improved significantly. If you want to see a significant effect, Swiss doctors suggest taking/kloc-0 for more than 0 months. I will always give it to my children at home and expect them to get better and better.