I'd never heard of the stuff, but apparently it's just zinc - well a special type of zinc. Which reminded me to see if I have any zinc in the cupboard (should have thought of that myself a couple days ago when I was in agony with a headcold).
However,
Wikipedia has some interesting information about Zicam
QUOTE
...
In September 2003, Zicam, a brand of homeopathic zinc cold remedy, faced lawsuits from users who claimed that the product negatively affected their sense of smell, and sometimes taste. In January 2006, 340 lawsuits were settled for $12 million.[1] In early 2004, at the height of the controversy, Matrixx Initiatives, Inc., the maker of Zicam, claimed that only a small number of people had experienced problems and that anosmia (loss of smell) can, amongst others, also be caused by the common cold itself. Matrixx also claimed that zinc gluconate dissolves into zinc ions and gluconate, and that both are naturally occurring compounds which are found in all human tissues. They also claim that Zicam is a buffered gel that is formulated to have a neutral pH. Others countered Matrixx, claiming that many of the patients had experienced a strong and very painful burning sensation when they used the product, indicating damage to the nasal tissue. Nonetheless the nasal gel continues to be sold..
I think I'll stick with the zinc supplements