All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Stelazine:
Drowsiness; dizziness; blurred vision; dry mouth; stuffed nose; nausea; difficulty urinating; widening or narrowing of the pupils (black circles in the middle of the eyes); constipation; changes in appetite; weight gain; blank facial expression; shuffling walk; agitation; jitteriness; unusual, slowed, or uncontrollable movements of any part of the body; difficulty falling asleep or staying asleep; headache; extreme tiredness; weakness; breast enlargement; breast milk production; missed menstrual periods; decreased sexual ability in men.
Seek medical attention right away if any of these SEVERE side effects occur when using Stelazine:
Fever; muscle stiffness; confusion; fast or irregular heartbeat; sweating; yellowing of the skin or eyes; flu-like symptoms; sore throat, chills, and other signs of infection; neck cramps; tongue that sticks out of the mouth; tightness in the throat; difficulty breathing or swallowing; fine, worm-like tongue movements; uncontrollable, rhythmic face, mouth, or jaw movements; seizures; blisters; rash; hives; itching; swelling of the eyes, face, mouth, lips, tongue, throat, arms, hands, feet, ankles, or lower legs; erection that lasts for hours; vision loss, especially in low light.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
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