Stores in my area have been out of vitamin C for a couple of weeks now. Zinc cough drops too.
you have to look for items where people dont get that it has zinc on them...i havent had a problem finding Cold-eeze or generic equivalents
Also various Zarbees products
Its hit and miss . Walgreens had plenty of Zicam stuff and Airborne C
I was thinking about buying the Zinc spray for the throat from Zicam. Not every story carries it.