What Is Olopatadine Nasal Spray Used For?
Allergies occur when the immune system reacts to a normally harmless substance — one that does not bother most people. This reaction is partly caused by the release of histamine from certain cells, known as mast cells. Olopatadine nasal spray is an antihistamine nasal spray that works by preventing histamine from binding to histamine receptors. Since histamine is responsible for many of the symptoms of allergies, blocking histamine can be very helpful.
