Background: Dextromethorphan (DM), the d-isomer of the codeine analog levorphanol, is an active ingredient present in a variety of cough and cold remedies. Recently, data generated from a study in ...

Lingering coughs after upper respiratory infections like the common cold or flu are called post-infectious or post-viral coughs. A lingering cough is mostly dry and is often referred to as "sub-acute, ...

Cough associated with acute and chronic respiratory conditions is common in patients of all ages. Levocloperastine is a novel antitussive with a pharmacological profile distinct from that of the ...