Look for it in the cold remedy section of the pharmacy. It has a fairly good reputation for abbreviating the common cold. It attracts me because it is sublingual.
Zinc is already well indicated against CoViD and is obviously accepted as a fair antiviral against colds; I don't know about the seasonal flu. Zicam also contains ascorbic acid (obviously Vit C) and some magnesium. You might wish to study the labeled ingredients; it is said that it is not an approved homeopathic product.
Wikipedia says of the name: The Zicam name is derived from a portmanteau of the words "zinc" and "ICAM-1" (the receptor to which a rhinovirus binds in order to infect cells).
***maybe it’s a good thing they put you on hold... I haven’t researched the vax at all***
I am not much disappointed; I mostly called to ask some questions about my two negative CoViD tests and my status with a negative antibody test; I hung on the phone, I suspect, to prove a point to myself. :)
Thank you for all that info.