The Food and Drug Administration (FDA) is taking steps to remove phenylpropanolamine (PPA) from all drug products and has requested that all drug companies discontinue marketing products containing PPA. In addition, FDA has issued a public health advisory concerning phenylpropanolamine. This drug is an ingredient that was used in many over-the-counter (OTC) and prescription cough and cold medications as a decongestant and in OTC weight loss products.

http://www.fda.gov/cder/drug/infopage/ppa/