This isnt advice I was given, but its advice that a lady in my mothers group got from a doctor at a local medical centre, and then told us all at mothers group that we should do this:

"if your baby is sick, just give her panadol, and then 2 hours later give nurofen, then 2 hours later give panadol and so on.... "

So yeah they'd only be getting each drug every 4 hours, but I dont know, it just seems like a lot to me. Now, I'm no health professional and maybe its ok to use panadol and nurofen like this, but I dont think I would do this. I'd be worried about damaging her.