I think it just won't happen. By putting that kind of obligation on the consumer.... We're all so time-pressed as it is, we don't get to do the things we want to do now. I think the natural reaction is to query, should this be happening, and is it of concern to me? Once they get an answer to that question, they're not going to go beyond that. Even if they're told that perhaps they'd better stop taking something right away because it has a very harmful side effect, they're not going to go back, sit down at their computer, and report to somebody. It's over and done with, as far as they're concerned.
