Nourianz Dosage
Generic name: istradefylline 20mg
Dosage form: tablet, film coated
Drug class: Miscellaneous antiparkinson agents
Medically reviewed by Drugs.com. Last updated on May 20, 2025.
Dosing Information
The recommended dosage of NOURIANZ is 20 mg administered orally once daily. The dosage may be increased to a maximum of 40 mg once daily, based on individual need and tolerability. Initial dose titration is not required.
NOURIANZ can be taken with or without food.
Dosage Adjustment with Strong CYP3A4 Inhibitors
The maximum recommended dosage of NOURIANZ with concomitant use of strong CYP3A4 inhibitors is 20 mg once daily.
Dosage Adjustment in Patients with Hepatic Impairment
The maximum recommended dosage of NOURIANZ in patients with moderate hepatic impairment (Child-Pugh Class B) is 20 mg once daily. Closely monitor patients with moderate hepatic impairment for adverse reactions when on NOURIANZ treatment. Avoid use of NOURIANZ in patients with severe hepatic impairment (Child-Pugh Class C).
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.