Monitor for pulmonary symptoms indicative of ILD/pneumonitis. W/hold treatment & promptly investigate patients for alternative diagnosis or specific aetiology of ILD; permanently discontinue use if ILD is confirmed. Monitor LFTs (including ALT, AST & total bilirubin) prior to starting treatment, every 2 wk during the 1st 3 mth of treatment, then once mthly or as clinically indicated. Interpretation of renal function estimates that rely on serum creatinine (CrCl or estimated GFR). Contains lactose; not to be taken by patients w/ rare hereditary problems of galactose intolerance, total lactase deficiency or glucose-galactose malabsorption. Severe renal (CrCl <30 mL/min) & hepatic (Child-Pugh Class C) impairment. May cause foetal harm. Women of childbearing potential should use effective contraception during treatment & for at least 1 wk after last dose; male patients w/ female partners of childbearing potential should use barrier contraception during treatment & for at least 1 wk after last dose. Pregnancy. Discontinue breastfeeding during treatment & for 1 wk after final dose. Childn <18 yr.