Shit's serious. We had a friend who died this year, not only but largely due to cumulative overdoses, for years, even though already being treated for years, ironically, for hepatitis. We told her repeatedly to tell her doctor not to prescribe percocet, which is almost entirely tylenol (a huge dose), and to have the doc prescribe oxycodone, perc's active ingredient, instead. She didn't listen. No she can't.
Bronwyn figured this shit out for herself --and for her doctors as well -- not a one of whom had ever considered the cumulative effects on one's liver of major doses hidden in all sorts of drugs, both prescription and over the counter, while doing their prescribing. They all acted like they were surprised by Bronwyn's idea, never having thought much about it. Bronwyn, who has to take mucho medications, had no choice but to think things through, having only one liver and a desire to live.
People who regularly drink alcohol have much to fear in this regard, also, but I've yet to see one change his or her ways when warned.
http://www.nytimes.com/2005/11/29/he....html?emc=eta1