If there is an overdose of Ambroxol in children, it can lead to the following adverse effects. Firstly, it can cause digestive symptoms in children. After taking a large amount of Ambroxol, it can cause nausea, vomiting and diarrhea, which are very common digestive symptoms. Secondly, it can cause the risk of choking, because Ambroxol is a sputum thinner, which can make sputum very thin when it is very sticky. When the dosage of the drug is increased, the dilution of sputum is very high, which can lead to a risk of asphyxia, especially in younger children. Finally, it can cause damage to the liver and kidneys, which can be tested promptly.