Initially 300 mg once daily (day 1), 600 mg once daily (day 2), 900 mg once daily (days 3-6), 1,200 mg once daily (days 7-10), 1,500 mg once daily (days 11-14) & 1,800 mg once daily (day 15).
Renal impairment (CrCl ≥60 mL/min) 1,800 mg once daily,
(CrCl 30-60 mL/min) 600-1,800 mg once daily.