I use this in an inhaler form as a nasal decongestant at bedtime. After a week's use, my nose has become raw and very sore. ## Those can be normal side effects of such inhalers, as reported by the NIH. You may also experience headache, sinus drainage, and funny taste in your mouth. Such side effects usually improve, once your body gets used to the medication, but it may take several weeks. If they don't improve, or if they worsen, you should consult your doctor. Are you on any other medications?