Nasonex Nasal Spray is a prescription nasal spray containing 50 micrograms of mometasone furoate per actuation. This 18g bottle provides 120 metered doses for the treatment of nasal symptoms and allergic conditions. This is a prescription medication manufactured by MSD (Merck Sharp & Dohme). The spray comes in an 18g bottle that delivers 120 precisely measured doses through a metered pump mechanism. Each spray actuation delivers 50 micrograms of the active ingredient mometasone furoate in a nasal suspension form.