Indications 

Risperdal is an antipsychotic medication that exerts its therapeutic effects by modifying the impact of certain chemicals in the brain. 

The administration of Risperdal is indicated for the treatment of schizophrenia in adult patients as well as in children who are 13 years of age or older. 

Moreover, Risperdal is utilized for the management of bipolar disorder symptoms (manic depression) in adult patients, as well as in children who are at least 10 years old. 

Risperdal is prescribed for the treatment of irritability in children who have autism, who are between 5 and 16 years old. 

Uses and Dosage 

Administer this medication orally with or without food as prescribed by your physician, usually once or twice daily. 

The dosage of this medication is determined by your age, medical condition, response to treatment, and other medications you may be taking. Ensure to inform your doctor and pharmacist about all the products you use, including prescription drugs, nonprescription drugs, and herbal products. Your physician may instruct you to initiate this medication at a low dose and gradually increase your dose to minimize your risk of side effects. Follow your doctor’s instructions carefully. 

Take this medication regularly to achieve maximum benefit from it. To aid in memory retention, take it at the same time(s) each day. Continue taking this medication even if you feel well. Do not discontinue taking this medication without consulting your doctor. 

Side Effects 

Allergic Reactions

Seek emergency medical help immediately if you experience an allergic reaction to Risperdal, which may include; 

• Hives 
• Difficulty breathing 
• Swelling of your face, lips, tongue, or throat 

Severe Side Effects

Contact your doctor immediately if you experience any of the following symptoms: 

• Uncontrolled muscle movements in your face, including:
  • chewing,
  • lip smacking,
  • frowning,
  • tongue movement,
  • blinking,
  • eye movement 
• Breast swelling or tenderness in men or women, nipple discharge,
• Impotence
• Lack of interest in sex
• Missed menstrual periods 
• Severe nervous system reaction, including:
  • Very stiff (rigid) muscles
  • High fever
  • Sweating
  • Confusion
  • Fast or uneven heartbeats
  • Tremors
  • Feeling like you might pass out 
• Low white blood cells:
  • Sudden weakness or ill feeling
  • Fever
  • Chills
  • Sore throat
  • Mouth sores
  • Red or swollen gums
  • Trouble swallowing
  • Skin sores
  • Cold or flu symptoms
  • Cough
  • Trouble breathing 
• Low levels of platelets in your blood:
  • Easy bruising
  • Unusual bleeding (nose, mouth, vagina, or rectum)
  • Purple or red pinpoint spots under your skin 
• High blood sugar:
  • Increased thirst
  • Increased urination
  • Dry mouth
  • Fruity breath odor 
• Painful penis erection that lasts for 4 hours or longer 

Common Side Effects 

• Headache 
• Dizziness, drowsiness, or feeling tired 
• Tremors, twitching, or uncontrollable muscle movements 
• Agitation, anxiety, or restless feeling 
• Depressed mood 
• Dry mouth
• Upset stomach, diarrhea, or constipation 
• Weight gain 
• Cold symptoms such as:
  • Stuffy nose
  • Sneezing
  • Sore throat 

Caution 

Before initiating risperidone therapy, inform your healthcare provider of any known hypersensitivity to this medication, paliperidone, or any other allergies. This medication may contain inactive ingredients that could trigger an allergic reaction or other adverse effects. Consult with your pharmacist to obtain further information on this matter. 

Risperidone may cause QT prolongation, a condition that affects the heart rhythm, which may result in fast/irregular heartbeat, severe dizziness, fainting, or other symptoms that require urgent medical attention. The risk of QT prolongation may be elevated in patients with specific medical conditions or those taking medications that can cause QT prolongation. 

Inform your healthcare provider or pharmacist of all drugs you are taking and if you have certain heart problems, a family history of such problems, or a prolonged QT interval in the EKG before initiating risperidone therapy. 

This medication may cause dizziness or drowsiness. Alcohol or marijuana use may exacerbate these effects. Therefore, refrain from driving, operating machinery, or performing tasks that require alertness until you can do so safely. Avoid alcoholic beverages, and if you are using marijuana, consult your healthcare provider. 

This medication may decrease sweating, which may increase the likelihood of heat stroke. To minimize the risk of overheating, avoid activities that could cause overheating, such as strenuous exercise in hot weather or using hot tubs. Ensure that you stay hydrated during hot weather, dress lightly, and take breaks to cool down if you overheat. Seek immediate medical attention if you experience a fever that does not subside, mental/mood changes, headache, or dizziness. 

As untreated mental/mood problems, such as schizophrenia, bipolar disorder, or depression, can have severe consequences, do not discontinue this medication unless directed by your healthcare provider. If you are planning to become pregnant or think you may be pregnant, consult your healthcare provider immediately to discuss the risks and benefits of using this medication during pregnancy.