Otrivin Nasal Drops 0.1% is used for the treatment of of colds, it contains 1 mg of Xylometazoline hydrochloride in each mL. Each drop delivers 0.025 mg of Xylometazoline hydrochloride. It is designed to be applied in the nostrils, where it exerts a vasoconstricting effect thereby decongesting the mucosa of the nose and throat.