No well controlled trials have been performed with either Montelukast or Levocetirizine in women who are pregnant. Therefore, use of MONTELUKAST PLUS LEVOCETIRIZINE is not recommended in women who are pregnant. It is not known whether Montelukast or Levocetirizine are excreted in breast milk. Therefore, use of MONTELUKAST PLUS LEVOCETIRIZINE is not recommended in women who are breastfeeding.