Istradefylline

Istradefylline, sold under the brand name Nourianz, is a medication used as an add-on treatment to levodopa/carbidopa in adults with Parkinson's disease (PD) experiencing "off" episodes.[2][3][4] Istradefylline reduces "off" periods resulting from long-term treatment with the antiparkinson drug levodopa.[2] An "off" episode is a time when a patient's medications are not working well, causing an increase in PD symptoms, such as tr... [wikipedia]