Dextromethorphan is an
antitussive drug. It is one of the active ingredients in many
over-the-counter cold and
cough medicines, such as
Robitussin,
NyQuil,
Dimetapp,
Vicks,
Coricidin,
Delsym, and others, including
generic labels. Dextromethorphan has also found other uses in medicine, ranging from
pain relief to
psychological applications. It is sold in syrup, tablet, spray, and
lozenge forms. In its pure form, dextromethorphan occurs as a white powder.