What this shows, if nothing else, is how he was a true believer in doctors and the pharmaceutical industry...as most people are. There are vast numbers of people out there who are taking that many drugs...and more. They don't think twice about it.
I was watching Bowling for Columbine last night, and while MM made many good comments about why there is so much violence in our society, not once did he mention the use of perscription drugs (or recreational ones, for that matter).