Decomit Nasal Spray 50ml is a nasal decongestant spray used to relieve nasal congestion caused by colds, sinusitis, or allergies. It typically contains xylometazoline, a medication that works by narrowing the blood vessels in the nasal passages, reducing swelling, and allowing for easier breathing. This spray provides fast, temporary relief from blocked noses and is generally used for a short duration to avoid potential side effects.