A 6-month-old with a cold, runny nose, and difficulty breathing needs urgent medical attention. Take your baby to the paediatrician or to the emergency care immediately, as breathing difficulties can be severe in infants.

Maxtra and Xyzal are generally safe for colds and a blocked nose, but since your father has high blood pressure, decongestants can raise blood pressure. It is better to consult his doctor before continuing Maxtra.