I need suggestions or tips. No matter what I do I cannot give my son medicine without it making him…

I need suggestions or tips. No matter what I do I cannot give my son medicine without it making him sick and throwing up. I'll try to mix it with water, milk anything and everything and within an hour later he wakes up throwing up. It doesn't matter whether it's Tylenol, ibuprofen or something for his sinuses. Does Anyone have any tips or suggestions or anything?