S(-)-Carbidopa is an inhibitor of peripheral decarboxylase, the enzyme responsible for conversion of L-DOPA to dopamine. Administration of S(-)-Carbidopa with L-DOPA demonstrates a decrease in the effects associated with rapid conversion of L-DOPA to dopaA dopa decarboxylase inhibitor Product Describtion: S(-)-Carbidopa is an inhibitor of peripheral decarboxylase, the enzyme responsible for conversion of L-DOPA to dopamine. Administration of S(-)-Carbidopa with L-DOPA demonstrates a decrease in the effects associated with rapid conversion of L-DOPA to dopa A dopa decarboxylase inhibitor Product Application： Carbidopa may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by chromatography techniques.