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Doctor insights on: Risperidone

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Dr. Herman Hammerstead
302 Doctors shared insights

Risperidone (Overview)

Risperidone is a second generation antipsychotic that is fda approved for schizophrenia, bipolar disorder, and behavioral issues with autism. It is generally effective and used commonly. Side effects include sedation, weight gain, increase in lipids and blood sugar, hunger, severe muscle reactions such as dystonia, tremors, among others. It also comes in a long acting injectable form.


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What is prescribed risperidone used for?

What is prescribed risperidone used for?

Lots of things: Originally, Risperidone was prescribed for psychosis in schizophrenia, but now we use it for other things: mood stabilization, aggression in autism, tics, ocd, and even stuttering. ...Read more

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Dr. Herman Hammerstead
302 Doctors shared insights

Risperidone (Overview)

Risperidone is a second generation antipsychotic that is fda approved for schizophrenia, bipolar disorder, and behavioral issues with autism. It is generally effective and used commonly. Side effects include sedation, weight gain, increase in lipids and blood sugar, hunger, severe muscle reactions such as dystonia, tremors, among others. It also comes in a long acting injectable form.


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Please describe the medication: risperidone?

Please describe the medication: risperidone?

Risperidone: Risperidone is a second-generation antipsychotic medication used to treat conditions such as schizophrenia, bipolar disorder, psychotic depression, etc. It can be used off-label for augmentation in treatment-resistant ocd, otsd, and depression. In low doses it is less likely than earlier antipsychotics to cause movement disorders, but the risk increases with dose. ...Read more

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Can risperidone be prescribed prn?

Can risperidone be prescribed prn?

Not usually: I suppose a doctor could prescribe Risperidone prn, but this wouldn't be utilizing it effectively. It needs consistent use for best results. ...Read more

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Which drugs are effective in treating akathisia caused by risperidone 2mg?

Which drugs are effective in treating akathisia caused by risperidone 2mg?

Several: Classes of drugs are used, but the most important is to stop or reduce the dose of the medication which is usually the cause, or to switch to another drug which is less likely to cause it. Beta blockers, clonidine, mirtazepine and anticholinergics (biperidin, akineton, benadryl) have all been used with varying success rates. ...Read more

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Does risperidone work right away?

Does risperidone work right away?

In some respects: It depends on the desired effect. It eases acute agitation right away. Its antipsychotic effect usually takes a couple days to start. If given to "help" an antidepressant work (not FDA approved for this), that usually takes a few days too. As with most psychiatric meds, side-effects (e.g., sedation) can occur right away, but you often have to wait for the benefits. ...Read more

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Is it safe to take risperidone while pregnant or breastfeeding?

Is it safe to take risperidone while pregnant or breastfeeding?

Maybe: Resperidone is a very potent medication used for some forms of mental illness. In women who need it, it may need to be taken during pregnancy and they may be counseled to avoid breastfeeding. Bables born to mothers on respiradol may have some withdrawl symptoms at birth. Talk to your doctor before stopping respiradol, or if you are considering pregnancy and you take it. ...Read more

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I'm taking risperidone for years now, can piracetam improve its cognitive side effects safely?

I'm taking risperidone for years now, can piracetam improve its cognitive side effects safely?

Maybe: Risperidone has cognitive side effects in some people due to its anticholinergic activity. Piracetam may have some theoretical benefits. You should notice something within 2-4 weeks otherwise I would discontinue it. ...Read more

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I began to feel nerve pain and anxiety when I stopped taking risperidone for a few day. Is that a common side effect.

I began to feel nerve pain and anxiety when I stopped taking risperidone for a few day. Is that a common side effect.

Risperidone: You experienced these effects after stopping the medication. Your experience is certainly not abnormal. It should get better within a few days. ...Read more

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What are the side effects of risperidone?

What are the side effects of risperidone?

Many Dose dependent: Common adverse events with Risperidone (<5% and 2x placebo) can include tremor, slowed muscle movement, restlessness, abnormal muscle tone, sedation, dizziness, anxiety, blurred vision, nausea, dry mouth, constipation, increased appetite, increased weight, nasopharyngeal complaints, rash and fatigue. ...Read more

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How much time for risperidone to get into system?

How much time for risperidone to get into system?

30-60min: Usually a person feels the effect within 30-60 min ...Read more

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Help please? How long does akathisia last when starting a course of risperidone?

Help please? How long does akathisia last when starting a course of risperidone?

Highly variable: It may or may not go away, and in some cases it will continue and get worse. If this happens, switching to another medication is usually done. There are many medications that may reduce the akathesia, such as akineton, biperidin or benadryl (diphenhydramine). Recently Gabitril was effective in one study. There are generally similar medications to risperdol which may have lower incidence of akasthesia and be tried. ...Read more

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Could you tell me what is the half life of risperidone?

Could you tell me what is the half life of risperidone?

Depends: 20 hours after oral administration and 2.9-6 days after injection into a muscle. ...Read more

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Does the sedative effect of risperidone wear off over time like a sleeping pill?

Does the sedative effect of risperidone wear off over time like a sleeping pill?

Usually: The initial effects of this drug class includes sedation. However, with long term use, this subsides unless the dose is changed (increased). ...Read more

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Are there any known interactions between risperidone, benztropine mes., vistaril, (hydroxyzine) cephalexin, and marijuana for someone who has neuro-lyme disease?

Are there any known interactions between risperidone, benztropine mes., vistaril, (hydroxyzine) cephalexin, and marijuana for someone who has neuro-lyme disease?

Sedation: Neuro lyme disease can cause confusion, memory problems, fatigue, weakness and even seizures. The risperdal, vistaril (hydroxyzine), (hydroxyzine) benztropine ; cannabis can be sedating. U may not need both vistaril (hydroxyzine) ; benztropine if u r being treated for a psychiatric condition. Have u received IV antibiotic tx for the lyme disease? It would be better to stop smoking the marijuana. ...Read more

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Dr. Alan Ali Dr. Ali
2 doctors agreed:
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Why did risperidone make me fat?

Dr. Alan Ali Dr. Ali
2 doctors agreed:
Why did risperidone make me fat?

Risperdal: It antagonizes Serotonin 2C receptors, leading to weight gain. ...Read more

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Does risperidone work right away?

In some respects: It depends on the desired effect. It eases acute agitation right away. Its antipsychotic effect usually takes a couple days to start. If given to "help" an antidepressant work (not FDA approved for this), that usually takes a few days too. As with most psychiatric meds, side-effects (e.g., sedation) can occur right away, but you often have to wait for the benefits. ...Read more

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Can risperidone be prescribed prn?

Not usually: I suppose a doctor could prescribe Risperidone prn, but this wouldn't be utilizing it effectively. It needs consistent use for best results. ...Read more

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What amount risperidone is needed?

What amount risperidone is needed?

Varies greatly: That's a tough question and it depends on quite a few factors. Things to consider include your diagnosis, gender, weight, metabolism, other preexisting medical conditions...but most importantly your response is one of the greatest factors in determining the dose that is just right for you. ...Read more

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How large can risperidone dosage be?

16 mg: Is the highest dose listed in the pdr (drug manual). However, most people are not on this dose. Average doses are probably between 1 and 8 mg, with 4 mg being about average. ...Read more

Dr. Lonnie Smith
152 Doctors shared insights

Risperidal (Definition)

Risperidal is a serotonin-dopamine receptor blocker which is a kind of atypical anti-psychotic drug (drug ...Read more