Why the Warnings on Three Zicam Intranasal Zinc Products

On June 16, 2009, the Food and Drug Administration (FDA) gave the warning for consumers to stop using three zinc-containing Zicam products. The products, all used in the nose, may cause a loss of sense of smell. Incidentally, intra-nasal means in the nose. First a bit about what happened. Then an opinion as to why the FDA [...]