Products containing PPA continued to be sold even after questions were
raised regarding their safety. Many of these products were sold as
over-the-counter medications that did not require a prescription. Thus,
consumers had to rely on the manufacturer of the products for
information. No warnings were included on the packages until the FDA
issued the order requiring the companies to do so.
Although the FDA did eventually require stores to remove cold remedies
and diet pills containing PPA from the shelves, there was no way for the
agency to ensure that these products were out of the hands of consumers.
Some of the manufacturers of diet pills and cold remedies that contained
PPA were negligent in issuing warnings that their product might be
hazardous. Other companies were more responsible and issued warnings and
instructions for consumers regarding what they needed to do with the
Do I have a PPA (Phenylpropanolamine)