A mucolytic agent used in the treatment of respiratory disorders associated with viscid or excessive mucus. (From Martindale, The Extra Pharmacopoeia, 30th ed, p744)

A secretolytic, with mucolytic activity. Upon administration, bromhexine increases lysosomal activity and enhances hydrolysis of acid mucopolysaccharide polymers in the respiratory tract. This increases the production of serous mucus in the respiratory tract, which makes the phlegm thinner and decreases mucus viscosity. This contributes to its secretomotoric effect, and allows the cilia to more easily transport the phlegm out of the lungs. This clears mucus from the respiratory tract and may aid in the treatment of respiratory disorders associated with abnormal viscid mucus, excessive mucus secretion and impaired mucus transport.