- muscle stiffness
- confusion
- fast or irregular pulse
- sweating
- unusual uncontrollable movements of your face or body
- faintness
- seizures
- slow movements or shuffling walk
- rash
- hives
- itching
- difficulty breathing or swallowing
- painful erection of the penis that lasts for hours
Serious Adverse Side Effects of Risperdal
Risperdal may cause life-threatening neuroleptic-malignant syndrome, tardive dyskinesia, and suicide. NMS is a potentially fatal disorder. Risperdal, like other atypical antipsychotic drugs, has the potential to cause metabolic disorders, particularly hyperglycemia (excess sugar) and diabetes.
For further information about adverse effects of Risperidone contact FDA's MedWatch Adverse Event-Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
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