Adult, adolescent & childn >15 yr 1 tab of montelukast 10 mg + levocetirizine HCl 5 mg once daily.
Adult including elderly & childn ≥12 yr w/ mild renal impairment (CrCl 50-80 mL/min) 1 tab of montelukast 10 mg + levocetirizine HCl 2.5 mg once daily,
moderate renal impairment (CrCl 30-50 mL/min) 1 tab of montelukast 10 mg + levocetirizine HCl 2.5 mg once daily, every other day.