this is the big one. Phenyl-epinephrine doesn't work at all, it's consistently failed to outperform placebo, and the only reason it's on the market is because the FDA doesn't like pseudo-ephedrine (sudafed) because it can be used as a precursor for meth. Same reason they've required individual blister packs for sudafed (if only there was some illicit drug which gave you the focus and drive to perform repetitive tasks for hours on end...)
Same thing for imodium. The reason all of a sudden it's in blister packs? People found a way to abuse it and the FDA is going to ruin it for the rest of us.
In the case of acetaminophen, the FDA actively uses it as a poison to "discourage" addicts from taking large doses of painkillers or cough syrup. The point is explicitly that if you take too much, you'll burn out your liver, the FDA is actively inserting poison into the medicine to "discourage abuse".
In all of these cases, the common factor is that it makes things much more annoying or even dangerous/lethal for average people, while addicts are completely unaffected. No opiate addict in the world is going to get clean because of individual pill blister packaging. Meth addicts will just pop some pills and churn through the sudafed blister packaging, etc.
I am waiting for the other shoe to drop on imodium, now that the FDA is targeting it, it can't be too long until it's behind the counter or pulled entirely. And as someone who (TMI warning) suffers from what I'd term as moderately frequent IBS (never diagnosed but maybe I should) that's really going to suck for me.
The FDA is simply an instrument of drug-war policy, they're not oriented towards patient care and outcomes at all.