Drowsiness, dizziness, lightheadedness, blurred vision, constipation, or dry mouth may occur. If any of these effects persist or worsen, tell your doctor promptly.
Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as agitation, restlessness), unusual/uncontrolled movements (such as fixed upward stare, neck twisting, tongue movements, muscle spasms), shaking (tremor), difficulty urinating, enlarged/tender breasts, unusual breast milk production, weakness, easy bleeding/bruising, signs of infection (such as fever, persistent sore throat), severe stomach/abdominal pain, persistent nausea/vomiting, yellowing eyes/skin.
This medication may rarely cause a very serious condition called neuroleptic malignant syndrome (NMS). Get medical help right away if you have any of the following symptoms: fever, muscle stiffness/pain/tenderness/weakness, severe tiredness, severe confusion, sweating, fast/irregular heartbeat, dark urine, signs of kidney problems (such as change in the amount of urine).
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.