All of the following are true about antitussives, except

A. Dextromethorphan is a NMDA blocker which acts as central antitussive

B. Ambroxol is a mucolytic that causes depolymerisation of mucopolysaccharides

C. Carbocistene is a mucolytic with free sulphydryl group

D. Baclofen is a peripheral acting antitussive

Correct Answer: Carbocistene is a mucolytic with free sulphydryl group

Description: Carbocistene contains blocked sulphydryl group.

Category: Pharmacology

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