Sudafed Nasal Spray 0.1% Xylometazoline is used to relive nasal congestion and the symptoms of allergies, including blocked sinuses and stuffy nose. Each spray contains 140 micrograms of Xylometazoline hydrochloride, a decongestant which relieves a blocked or runny nose. This medication is non-drowsy. You Must Be Aged Over 18 Years to Purchase This Product. Maximum order quantity of 2 packets per order.