Oxymetazoline is a medication commonly used as a nasal decongestant. It works by constricting blood vessels in the nasal passages, which reduces swelling and congestion. This makes it easier to breathe when experiencing a stuffy nose due to colds, allergies, or sinus infections. Typically available as a nasal spray or drops, oxymetazoline provides quick relief, often within minutes. However, it is important to use it as directed, as prolonged use can lead to rebound congestion, where symptoms worsen after stopping the medication. Always consult a healthcare professional for proper guidance.