yes it like over dosing on drugs. If you really like the taste of them then Halls makes drops for reasons other that coughs.
there alright, they will only soothe your throat though nothing much, but your coughs will come right back if you don't take medicine
yes.
They are probably anemic.
Some cough drops may contain alcohol, but these days most of them don't just make sure to check and see what is in them.