The HQ/zinc Clinical study post was not an not a rec nor even of interest--posted merely as an example that there were various studies including zinc that may have contributed to demand.

Again, not endorsing in any way...just remember emphasisq on zinc (i believe the words were something to effect of), "to deliver payload."

No doubt people were also taking w/vit c, etc.

A friend of mine who turns 104 next month swears by it...says you take it the minute you feel a bit under weather and it helps knock out the cold.

Thanks for your thoughtful posts.