Anti-tussives classification

1) Peripheral acting

a) Pharyngeal demulcents and local sialogogues

Lozenges

Linctuses containing syrups

Menthol

Glycerine

Liquorice

b) Expectorants (Mucokinetic agents)

i) Directly acting

Citrates and Acetates of sod and Pot

Potassium iodide

Balsum of Tolu

Vasicine (alkaloid in Vasaka)

Terpin hydrate

Guaiphenesin

ii) Reflexively acting

Ammonium chloride

Potassium iodide

iii) Mucolytics

Acetyl cysteine

Mecysteine

Carbocisteine

Bromhexine

Ambroxol

Dornase alfa inhalation

2) Central acting

a) Opioids

Codeine

Pholcodeine

Ethylmorphine

Morphine

Methadone

b) Non-opioids

Noscapine

Dextromethorphan

Oxeladin

Chlophedianol

Carmiphene

Pipezethate

c) Antihistaminic

Chlorpheniramine

Diphenhydramine

Chlorcyclizine

Promethazine

d) Pulmonary receptor desensitizer

Prenoxdiazine