So it seems that Michael Jackson's private physician would prescribe anything he wanted, so long as he paid the exorbitant fees - reported to be $100,000 per month. Can't really see that happening on the NHS. Probably something to do with medical ethics:
"I will apply, for the benefit of the sick, all measures [that] are required, avoiding those twin traps of overtreatment and therapeutic nihilism." (from The Hippocratic Oath)
If Michael Jackson had believed in an ethically-based healthcare system uninfluenced by money at the point of delivery, he would still be alive today.