DO NOT use Risperdal if
- are allergic to any ingredient in Risperdal.
Contact your doctor or healthcare provider immediately if any of these apply to you.
Some medical conditions may interact with Risperdal. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breastfeeding
- if you are taking any prescription or non-prescription medicine, herbal preparation, or dietary supplement
- if you are allergic to medicines, foods or other substances
- if you have a history of seizures, heart problems (for example, heart failure, slow or irregular heartbeat), abnormal electrocardiogram (ECG), heart attack, stroke, blood vessel problems, high or low blood pressure, or low levels of white blood cells
- if you have a history of kidney or liver problems, stomach or intestinal problems (for example, narrowing, blockage), neuroleptic malignant syndrome (NMS), suicidal thoughts or attempts, or alcohol abuse or dependence
- if you have diabetes or are very overweight, or if a family member has had diabetes
- if you have Alzheimer's disease, dementia, Parkinson's disease, or problems with your esophagus (for example, problems with swallowing)
- if you have had high levels of prolactin in your blood or a history of certain types of cancer (eg, breast, pancreas, pituitary, brain), or if you are at risk of breast cancer
- if you are dehydrated, drink alcohol or are going to be exposed to very high or very low temperatures.
Some medications may interact with Risperdal. Tell your doctor if you are taking any other medicines, especially any of the following
- Alpha-blockers (eg, doxazosin) or high blood pressure medications, as this may increase the risk of low blood pressure and fainting
- Anticholinergics (for example, scopolamine) because it can increase the risk of overheating
- Tramadol because it can increase the risk of seizures
- Clozapine or selective serotonin reuptake inhibitors (SSRIs) (eg, fluoxetine, paroxetine) because they may increase the risk of Risperdal side effects
- Carbamazepine, phenobarbital, phenytoin, or rifampin because they may decrease the effectiveness of Risperdal
- Dopamine receptor agonists (eg, pramipexole) or levodopa because their effectiveness may be reduced by Risperdal.
This may not be a complete list of all interactions that may occur. Ask your doctor if Risperdal might interact with other medications you take. Check with your doctor before you start, stop, or change the dose of any medicine.
Important safety information:
- Risperdal may cause drowsiness, dizziness, lightheadedness, or blurred vision. These effects may be worse if you take it with alcohol or certain medications. Use Risperdal with caution. Do not drive or perform other potentially unsafe tasks until you know how you react.
- Do not drink alcohol while taking Risperdal.
- Check with your doctor before taking medications that may cause drowsiness (eg, sleeping pills, muscle relaxers) while you are using Risperdal; can increase its effects. Ask your pharmacist if you have questions about which medicines can cause drowsiness.
- Risperdal can cause dizziness, lightheadedness, or fainting; alcohol, heat, exercise, or fever can increase these effects. To prevent them, sit or stand up slowly, especially in the morning. Sit or lie down at the first sign of any of these effects.
- Don't overheat in hot weather or while being active; You can get heat stroke.
- Patients who have bipolar (manic-depressive) illness, or if their family members have had it, may be at increased risk of suicidal thoughts or actions. Closely monitor patients taking Risperdal. Contact your doctor right away if you have new, worsening, or sudden symptoms, such as anxious, restless, or irritable behavior; depressed mood; panic attacks; or any unusual changes in mood or behavior. Contact your doctor immediately if any signs of suicidal thoughts or actions occur.
- Risperdal can increase your blood sugar level. High blood sugar can make you feel confused, sleepy, or thirsty. It can also cause you to blush, breathe faster, or have fruity breath odor. If these symptoms occur, tell your doctor right away.
- Diabetes patients – Check blood sugar levels. Ask your doctor before changing the dose of your diabetes medicine.
- Risperdal can lower your body's ability to fight infection. Avoid contact with people who have colds or infections. Tell your doctor if you notice signs of infection such as fever, sore throat, rash, or chills.
- Neuromuscular syndrome is a potentially fatal syndrome that can be caused by Risperdal. Symptoms may include fever, muscle stiffness, confusion, abnormal thinking, fast or irregular heartbeat, or sweating. Contact your doctor right away if you have any of these symptoms.
- Some patients taking Risperdal may develop muscle movements that they cannot control. This is more likely to occur in elderly patients, especially women. The chance of this happening or becoming permanent is higher in those who take Risperdal at higher doses or for a long time. Muscle problems can also occur after short-term treatment with low doses. Tell your doctor at once if you have muscle problems with your arms, legs, or tongue, face, mouth, or jaw (for example, tongue sticking out, puffy cheeks, pursed mouth, chew) while taking Risperdal.
- Risperdal can increase the amount of a certain hormone (prolactin) in your blood. Symptoms may include increased breast size, missed periods, decreased sexual ability, or discharge from the nipples. Contact your doctor immediately if you experience any of these symptoms.
- Risperdal can rarely cause a prolonged and painful erection. This can happen even when you are not having sex. If this is not treated immediately, it could lead to permanent sexual problems such as impotence. Contact your doctor immediately if this occurs.
- Lab tests, including fasting blood glucose and complete blood cell count, may be done while you are using Risperdal. These tests may be used to monitor your condition or to check for side effects. Be sure to keep all doctor and lab appointments.
- Use Risperdal with caution in the elderly; they may be more sensitive to its effects, especially dizziness when standing up or uncontrolled muscle movements.
- Risperdal should be used with extreme caution in children under 5 years of age; safety and efficacy in these children have not been confirmed.
- Pregnancy and breast-feeding: If you become pregnant, consult your doctor. You will need to discuss the benefits and risks of using Risperdal while pregnant. Risperdal is found in breast milk. Do not breastfeed while taking Risperdal.
Use Risperdal as directed in the package insert