My 1 yr old ds is currently on a course of amoxicillin following a cough that became a cold that became vomiting. He finishes the course in a couple of days and I was considering giving him a probiotic to boost the bacteria in his gut and his immune system. I have no idea whether this is advisable for a child so young and if it is what is the most suitable way? Can anyone give me some advise, I would be very grateful!