A friend sent me an email today that products containing phenylpropanolamine (PPA) have been recalled by the FDA. The Phenylpropanolamine (PPA) Information Page from the FDA website has the history of this product which explains in detail why PPA has been reclassified as unsafe. Snopes.com has some more info on this recall (which is true but outdated.) Anyway, even though the info is outdated it's nice to see the FDA actually recalled something back in 2006! If you get an email that says "important send to everyone", check it out on Snopes.com to see if it is true.
It looks like you need to read the ingredients of any over the counter medicine carefully to make sure that it doesn't contain unsafe chemicals--including phenylpropanolamine. And while you are at it check out Snopes.com to see if the things you hear are true. Interestingly, the last line of the Snopes report on PPA made me chuckle:
"Barbara 'Better a head cold than six-feet-deep-cold' Mikkelson"