I've been advised by Dr's at the hospital that giving panadol orally can actually iritate the stomach and cause vomiting if kids are sick and that if that is the case to use panadol suppositories (??? spelling), same goes for Nurofen.

When my kids run a fever and are vomiting or diarrhea (or both), I try to avoid using panandol or nurofen if possible.

I hope your little man gets better very soon...