NCIt definition : An orally bioavailable derivative of the endogenous amino acid cysteine with two donatable
thiol groups, with potential antioxidant and anti-inflammatory activities. Upon oral
administration, bucillamine enters cells rapidly via the same pathway as cysteine
and replenishes the thiol group in glutathione (GSH), thereby increasing intracellular
GSH levels and GSH activity. GSH is an antioxidant and plays an important protective
role in oxidative stress and injury. Bucillamine may have additional anti-inflammatory
effects, though the mechanisms of action have yet to be fully elucidated.;