Nasal spray is a liquid medication delivered through the nose using a small spray bottle. It is commonly used to treat conditions like allergies, nasal congestion, and sinus infections. The spray works by delivering medication directly to the nasal passages, providing quick relief from symptoms. There are different types of nasal sprays, including decongestants, antihistamines, and steroid sprays. Each type serves a specific purpose, such as reducing swelling, blocking allergic reactions, or decreasing inflammation. Nasal sprays are easy to use and can be an effective alternative to oral medications for many people.