Risperidone is an antipsychotic medication that is mainly used to treat schizophrenia, symptoms of bipolar disorder known as manic depression and symptoms of irritability in autistic children; however it may also be used to treat other states as directed by the doctor.
Risperidone helps by changing the action of dopamine and serotonin that are the major chemicals in the brain.
What is the most important information I should know about risperidone?
Risperidone is contraindicated to treat psychotic states associated with dementia. This medication is known to have induced lethal stroke and heart attack in elderly patients with dementia-associated states.
Risperidone mustn’t be given to a child without a doctor's consultation.
Risperidone may deteriorate your reactions, thus be careful while driving or doing anything that demands you to be alert.
Risperidone is not recommended to be taken along with other medications that cause drowsiness including pain-killing drugs, muscle relaxers, cold medications and medications to treat seizures, anxiety or depression, as they may add to drowsiness induced by Risperidone.
Risperidone can be affected by other drugs that may be harmful to your health. To avoid any adverse events make sure your doctor knows about all the medications you are using including vitamins, dietary supplements, or herbal preparations. Never start taking any new drug without consultation with your doctor.
Drink plenty of liquids to avoid overheating, dehydrating or overcooling as you may be more responsive to temperature extremes, while taking Risperidone. Do not drink alcohol to avoid the risk of side effects. Give up taking Risperidone and seek emergency medical attention without delay if you are experiencing such adverse effects as fever, confusion, uneven or fast heartbeats, restless movements of your face or neck, stiff muscles, tremor, sweating, difficulty swallowing, fainting, or lightheadedness.
What should I discuss with my healthcare provider before taking risperidone?
Risperidone is not used if you have allergic reaction to it. Let your doctor know if you have had any allergic reactions to any drugs. Risperidone is not used for treating states associated with dementia.
Be sure your doctor knows if you have phenylketonuria (PKU) as Risperidone tablet contains phenylalanine or if you have
liver disease
kidney disease
heart disease, high blood pressure, heart rhythm problems
a history of heart attack or stroke
a history of breast cancer
seizures or epilepsy
diabetes (risperidone may raise your blood sugar)
a history of suicidal thoughts
Parkinson's disease
trouble swallowing
Risperidone may raise up your blood sugar. Contact your doctor immediately if you have any evidence of high blood sugar level (hyperglycemia) including abnormal hunger, higher urination or thirst, or weakness. In case you have diabetes, test your levels of blood sugar regularly while using Risperidone.
Be sure your doctor knows if you are pregnant or plan pregnancy or breast-feeding. Risperidone may be deleteriolis to an unborn or nursing baby.
Do not give Risperidone to a child without a doctor's consultation.
How should I take risperidone?
Follow doctor’s recommendations concerning dosing and duration STRICTLY.
Risperidone is taken without or with food.
Take Risperidone regularly to get the most effect. Do not forget to replenish your prescription before you run out of this medication.
What happens if I miss a dose?
If a dose is missed and it is nearly time to take another dose, leave out the missed one. Never take two doses at once at the same time to compensate the missed dose.
What happens if I overdose?
If you have overdosed the medicine, seek emergency medical help. Overdose symptoms include sleepiness, fast heartbeat, lightheadedness, faintness and restless movements of jaw, neck, tongue, or eyes.
What should I avoid while taking risperidone?
Drink plenty of liquids to avoid overheating, dehydrating or undercooling as you may be more responsive to temperature extremes, while using Risperidone.
Risperidone may deteriorate your reactions, thus be careful while driving or doing anything that demands you to be alert.
Do not take Risperidone along with other medications that may make you drowsy including pain-killing drugs, cold medications, muscle relaxers and medications to treat seizure, anxiety or depression as they may add to drowsiness induced by Risperidone. Do not drink alcohol to avoid the risk of side effects.
Risperidone side effects
Emergency medical help is required if you are experiencing allergic reaction, namely hives; swelling of your tongue, face, lips, or throat and difficulty breathing. Give up taking Risperidone and contact your doctor immediately if any of these adverse side effects occur:
fever, stiff muscles, confusion, sweating, fast or uneven heartbeats
restless muscle movements in your eyes, tongue, jaw, or neck
tremor (uncontrolled shaking)
trouble swallowing
feeling light-headed, fainting
Less adverse side effects include:
mild restlessness, drowsiness, or tremor
sleepiness, dreaming more than usual
blurred vision
dizziness or headache
weight gain
problems with urination
nausea, dry mouth, constipation
decreased sex drive, impotence, or difficulty having an orgasm
Let your doctor know immediately if you are experiencing any troublesome side effects.
What other drugs will affect risperidone?
Risperidone can be affected by other drugs that may be harmful to your health. To avoid any adverse events make sure your doctor knows about all the medications you are taking including vitamins, dietary supplements, or herbal preparations. Never start using any new drug without consultation with your doctor. Here is the list of some drugs that are not recommended to use with Risperidone, though it is not complete. Be sure your doctor knows if you are using any of these medications:
carbamazepine (Carbatrol, Tegretol)
phenytoin (Dilantin)
phenobarbital (Luminal, Solfoton)
clozapine (Clozaril)
fluoxetine (Prozac) or paroxetine (Paxil)
rifampin (Rifadin, Rimactane, Rifater)
medicines used to treat Parkinson's Disease such as levodopa (Dopar, Larodopa, Sinemet, Atamet, others), bromocriptine (Parlodel, others), pergolide (Permax), pramipexole (Mirapex), or ropinirole (Requip)
What is the shelf life of the pills?
The expiry date is mentioned on each blister. It is different for different batches. The shelf life is 2 years from the date of manufacture and would differ from batch to batch depending on when they were manufactured.
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