<unk>  is used to try to help with coughing up thick mucus and is sometimes combined with dextromethorphan, an antitussive (cough suppressant), such as in Mucinex DM or Robitussin DM. It is also combined with ephedrine to produce Primatene and Bronkaid tablets for symptomatic relief of asthma.
Guaifenesin
Tesofensine
Glycopyrronium bromide
Methacholine
Bethanechol
Alfaxalone
Ephedrine
Pseudoephedrine