tut tut expat
wrong!!
when i trained as a tech using paracetamol as an example.
you take 1 paracetamol at the onset of pain,if you still have pain you take another an hour later,so you are building analgesia up in your body slowly,according to your pain threshold,if you still have pain,take 2 paracetamol every 4 hrs (so you are building analgesia up in your body)and have paracetamol working at all times,then if that doesnt work you move something stronger.Otherwise if you go to the strongest first you have no where else to go iyswim