Risperidone Side Effects
Some side effects of risperidone may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to risperidone: oral solution, oral tablet, oral tablet disintegrating
Get emergency medical help if you have any of these signs of an allergic reaction while taking risperidone: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop taking risperidone and call your doctor at once if you have a serious side effect such as:
fever, stiff muscles, confusion, sweating, fast or uneven heartbeats;
restless muscle movements in your eyes, tongue, jaw, or neck;
drooling, tremor (uncontrolled shaking);
fever, chills, body aches, flu symptoms;
white patches or sores inside your mouth or on your lips;
feeling like you might pass out; or
penis erection that is painful or lasts 4 hours or longer.
Less serious side effects of risperidone may include:
feeling hot or cold;
drowsiness, tired feeling;
dry mouth, increased appetite;
feeling restless or anxious;
sleep problems (insomnia);
nausea, vomiting, stomach pain, constipation;
cough, sore throat, runny or stuffy nose; or
mild skin rash.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
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