Vasicine
Bromhexine , a synthetic compound imitating the molecular shape of vasicine , is a common ingredient of cough medicine for its mucolytic properties; it increases the production of serous mucus in the respiratory tract which makes the phlegm thinner and less viscous , which allows the cilia to more easily transport the phlegm out of the lungs . 
<triplet> Bromhexine <subj> mucolytic <obj> subject has role