Tab Adult & childn >12 yr 1 tab once daily. Severe liver impairment Initially 5 mg once daily or 10 mg every other day. Syr Adult & childn >12 yr10 mL once daily.Childn 6-12 yr weighing >30 kg 10 mL once daily,2-5 yr weighing <30 kg5 mL once daily. Severe liver impairment Initially 2.5 mg once daily or 5 mg every other day.