Yup. Poor Heath. But I don't believe that any doctor would have prescribed that combo to one single person - it's overkill. Some people tend to get dyslexic with painkillers and anxiolytics (I was long one of them): "1 every 6 hours as needed" does not mean "6 every hour if the shit hits the fan". And if you have 2 or 3 doctors that don't know about each other... well, you'd likely end up with an overlap of different versions of each med, much like Ledger's combo indicates. Self-supervised medication with such things is not much better than being a street junkie (I was one of those too). It just feels like it won't kill you cuz a Dr. or Drs. prescribed 'em.