For these symptoms, Cheston Cold (containing cetirizine, phenylephrine, and paracetamol) is generally more suitable as it helps relieve congestion and common cold symptoms. Montair LC (containing levocetirizine and montelukast) is typically prescribed for allergic rhinitis and asthma, rather than a standard cold. Since you also have a cough, it is important to identify its cause to treat it effectively. Please rest well and stay hydrated. I highly recommend consulting a healthcare professional for a personalized evaluation to ensure you get the safest and most effective treatment.