Adult 13.5 mg once daily for 14 days followed by 7 days off therapy. May be reduced for toxicity management to 9 mg once daily for 14 days followed by 7 days off therapy; may be further decreased to 4.5 mg once daily for 14 days followed by 7 days off therapy.
Concomitant use w/ strong or moderate CYP3A4 inhibitors Reduce to 9 mg once daily if taking 13.5 mg once daily; reduce to 4.5 mg once daily if taking 9 mg once daily.
Severe renal & hepatic impairment Reduce to 9 mg once daily if taking 13.5 mg once daily; reduce to 4.5 mg once daily if taking 9 mg once daily.