Earlier quoted context omitted.
A concern with OTC drugs is specifically that they won't be taken at normal doses. People confuse brand names and drug names, and don't realize they are taking more than the reccomended amount. This is especially problematic with combination drugs.
Doesn't OTC specifically mean the ones that can't just be on the shelf ? Where you do not need a prescription but a pharmacist still has to be asked to hand it to you "over the counter" ?
It's funny, I never thought about it, but you're right, it does sound backwards.