What side effects may I notice from receiving Xenazine?

Side effects that you should report to your doctor or health care professional as soon as possible:
-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-difficulty swallowing
-dizziness or fainting
-fast or irregular heartbeat
-low blood pressure
-restless with urgent need to move
-stiff muscles, fever, and sweating
-suicidal thoughts or other mood changes
-uncontrollable head, mouth, neck, arm, or leg movements
-unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
-change in sex drive or performance
-constipation
-drowsiness
-stomach upset
-trouble sleeping

This list may not describe all possible side effects for Xenazine. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.