Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Blurred vision
fast, irregular, or pounding heartbeat
headache, dizziness, drowsiness, or lightheadedness
high blood pressure
increase in runny or stuffy nose
nervousness
trembling
trouble in sleeping
weakness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Burning, dryness, or stinging inside of nose
sneezing
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
 Four-Way Nasal Spray side effects (more detail)
