A decongestant called phenylpropanolamine (PPA) was used for years as an ingredient in many cold medicines to clear up a stuffy nose. In 2000, researchers found it was linked to an increased risk ...

Phenylpropanolamine is an ingredient used in prescription and over-the-counter drug products such as nasal decongestants to relieve stuffy noses or sinus problems, cough and cold products and in ...