My mom emailed me over the weekend about a friend of hers that used nasal spray Zicam and lost her sense of smell and taste. She said after googling Zicam it turns out this is pretty common, in fact they have brought lawsuits and payed 340 people this last year.
Here is a really well done news video about it. http://zicam.vanosteen.com/video.asp
It also aggravates me that they market this under Homeopathic medicine and are therefore hiding behind the shield of "you can't prove it, because we haven't had any trials done on it". The FDA doesn't regulate herbs and homeopathies. I am glad they don't, but there are groups and systems in place to follow for safe homeopathies. Obviously this company didn't care about that. They are just trying to make a buck. Real homeopathic remedies are specific to the individual and for specific symptoms and problems. On the whole these remedies are not blank remedies, like Zicam was claiming to be for the common cold.