Calpol saline nasal drop helps clear away accumulated mucus so that your child may breathe more easily. It functions by cleansing and rehydrating the nasal passages. It is simple to use with fingertip control and comes with a pipette applicator. You can use it from birth because it is a straightforward, all-natural, non-medication treatment. Cold and flu-related congestion and clogged noses, sinusitis, allergies, including hay fever, and post-nasal surgery are all treated with it.