Catechol-O-methyltransferase (COMT) Inhibitors

| Prevent dopamine breakdown in the brain → increased dopamine availability

Increase effect duration | Decrease “off” time and increase “on” time (address )

Enhance motor response in patients with motor fluctuations | • • Exaggerate S/E of levodopa • Urine may turn orange (benign issue)

Rare but serious | | --- | --- | --- |