Next I hope they do cough medicines, I looked a few years ago when I had a cough and it seems like literally none of the OTC ones are more effective than placebo.
Dextromethorphan is the only otc cough medicine that works and pretty much the only prescription stuff that works is opiate based. Of course both are regulated.
Dextromethorphan (DM or DXM) is the OTC cough suppressant. Marketed as Delsym comes in an orange box, or you can find it in various combo formulations, and it works