Zolmist Nasal Spray is used to treat acute migraine attacks. It works by narrowing the blood vessels, thereby relieving migraine headaches and preventing the attack from becoming worse. Zolmist Nasal Spray should be used as advised and you must follow proper guidance of the doctor. Carry the spray with you as an attack may occur anytime. Do not skip any doses and finish the full course of treatment even if you feel better. If you have missed a dose, take it as soon as you remember it. Side effects associated with the use of this medicine include dryness in mouth, nausea, taste changes, drowsiness and peripheral neuropathy (tingling and numbness of feet and hands). It may cause dizziness, do not drive or operate machinery until you know how this medicine affects you. Inform your doctor if you are suffering from any heart disease as the use of this medicine is contraindicated in some heart problems.