What's the plural form of cough syrup? Here's the word you're looking for.
Answer
The noun cough syrup can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be cough syrup.
However, in more specific contexts, the plural form can also be cough syrups e.g. in reference to various types of cough syrups
or a collection of cough syrups.