Have you seen the ingredient list on cough drop packages? I'm not just pointing out Halls, but take a look at some of the "natural" brands, too! This cough drop recipe is made with ingredients we can pronounce and probably have on hand, too.
Homemade cough drops: Honey Spice - Only using YOUNG LIVING Thieves instead. (or maybe peppermint? or a combination of oils.) There are so many fantastic uses for Young Living Essential Oils! Interested in purchasing?
A personal favorite from my Etsy shop https://www.etsy.com/listing/589439415/spicy-orange-beer-and-goat-milk-soap