Please check with a naturopath (doctor in natural medication). I was supposed to be on antibiotic and even the doctor in the emergency told me she was not for that. So I went for "echinacea" which is a natural antibiotic. But go to your natural store, ask them to refer you a doctor in naturopathy. Antibiotic, it is known, destroy a lot of good things in your body. I am sure, somebody in the natural field can help your son. Four times is a lot. I'll pray for him. Wish you the very best for him.