Otrivin Oxy Fast Relief Adult Nasal Spray is a nasal decongestant used to relieve nasal congestion caused by hay fever (allergic rhinitis), common colds, flu, sinusitis, and other allergic conditions. Nasal congestion, commonly known as a stuffy nose, occurs when nasal passages swell due to excess mucus and fluid.

The active ingredient, Oxymetazoline, works by narrowing the blood vessels in the nasal lining, reducing swelling and mucus production. This provides fast and effective relief from nasal blockage.