Risperidone (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Aggressive behavior
• Agitation
• Anxiety
• Changes in vision, including blurred vision
• Decreased sexual desire or performance
• Difficulty concentrating
• Difficulty speaking or swallowing
• Inability to move the eyes
• Loss of balance control
• Mask-like face
• Memory problems
• Menstrual changes
• Muscle spasms of the face, neck, and back
• Problems with urination or increase in the amount of urine
• Restlessness or need to keep moving (severe)
• Shuffling walk
• Skin rash or itching
• Stiffness or weakness of the arms or legs
• Tic-like or twitching movements
• Trembling and shaking of the fingers and hands
• Trouble sleeping
• Twisting body movements

• Back pain
• Chest pain
• Speech or vision problems
• Sudden weakness or numbness in the face, arms, or legs
• Unusual secretion of milk

• Confusion
• Dizziness
• Drowsiness
• Extreme thirst
• Fast, shallow breathing
• Fast, weak heartbeat
• Headache
• Increased thirst
• Lip smacking or puckering
• Loss of appetite
• Muscle cramps
• Pale, clammy skin
• Poor coordination
• Prolonged, painful, inappropriate erection of the penis
• Puffing of the cheeks
• Rapid or worm-like movements of the tongue
• Shivering
• Talking, feeling, and acting with excitement and activity that cannot be controlled
• Uncontrolled chewing movements
• Uncontrolled twisting movements of neck, trunk, arms, or legs
• Unusual bleeding or bruising
• Unusual facial expressions or body positions

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Constipation
• Cough
• Diarrhea
• Dry mouth
• Headache
• Heartburn
• Increased dream activity
• Increased length of sleep
• Nausea
• Sleepiness or unusual drowsiness
• Sore throat
• Stuffy or runny nose
• Unusual tiredness or weakness
• Weight gain

• Body aches or pain
• Chills
• Dandruff
• Darkening of skin color
• Dry skin
• Ear congestion
• Fever
• Increase in body movements
• Increased watering of the mouth
• Joint pain
• Loss of voice
• Oily skin
• Pain or tenderness around the eyes and cheekbones
• Shortness of breath or troubled breathing
• Sneezing
• Stomach pain
• Tightness of the chest or wheezing
• Toothache
• Vomiting
• Weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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