#AskTheExpert hi Dr., my son is 3 years old and he hits and pushes his cousins for no reason. he even bangs his head / slaps himself when angry or didn't get what he asks for. we were informed on first cry app only by one of the doctors,that this behaviour can be due to nutritional deficiency.. we researched more about it and could find that it can be due to deficiency of Vitamin B6, calcium and DHM. please can you suggest the liquid supplement for vitamin B6, calcium and DHM and in what quantity which can help my son with such behaviours.