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Risperidone

Medication atypical antipsychotic mental health
Aka: Risperdal
Brands seen in Singapore: Risperdal, Risperidex, Apo-Risperidone, Risperidone Mevon, Risperdal Consta
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
NHS: schizophrenia and the mania of bipolar disorder
When to take
NHS: once or twice a day · days to months to work fully
Take with
HealthHub: with or without food · liquid not mixed with tea
Pros & cons
Pros
  • HealthHub: tablets, oral solution and a depot injection
  • NHS: it can help the symptoms, though it does not cure
  • HealthHub: SG leaflet pairs each side effect with tips
Cons
  • HealthHub: sleepiness, weight gain, movement effects
  • HealthHub: raised prolactin — period and breast changes
  • HealthHub: rare tardive dyskinesia and seizures
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084), Forensicclassification column; all 5,511 rows cached at /tmp/hsa_all.json and filtered locally (not re-fetched), 16 risperidone rows, 27 Aug 2026 · read 2026-08-27
    what it says
    “RISPERDAL TABLET 1 mg SIN08061P and 2 mg SIN08058P · RISPERDAL ORAL SOLUTION 1 mg/ml SIN09905P · RISPERDAL CONSTA 25/37.5 mg/vial · RISPERIDEX SIN14418P · Apo-Risperidone — ATC N05AX08; all 16 rows read "Prescription Only"”
  2. NHS medicines A–Z — Risperidone: about risperidone · read 2026-08-27
    what it says
    “It's an antipsychotic medicine that works by affecting chemicals in your brain, such as dopamine and serotonin. It does not cure your condition, but it can help the symptoms. Risperidone is only available on prescription.”
  3. NHS medicines A–Z — Risperidone: dosage and how to take risperidone · read 2026-08-27
    what it says
    “Most people feel better with daily doses of 4mg to 6mg. You can take it as a single dose each day or … half your dose in the morning and half in the evening.”
  4. NHS medicines A–Z — Risperidone: taking risperidone with other medicines and herbal supplements · read 2026-08-27
    what it says
    “rifampicin …; carbamazepine or phenytoin …; itraconazole …; medicines that make you feel sleepy such as diazepam …, morphine or tramadol … While you're taking risperidone, do not take: St John's wort …; ginkgo biloba”
  5. HealthHub (Pharmaceutical Society of Singapore / MOH) — Risperidone: what is this medication for (leaflet reviewed 25 May 2026) · read 2026-08-27
    what it says
    “Risperidone belongs to a class of medications known as atypical (second-generation) antipsychotic. It is used to treat and prevent the return of symptoms in Schizophrenia and other mental health related conditions”
  6. HealthHub — Risperidone: how should I take or use this medication · read 2026-08-27
    what it says
    “Risperidone may be taken with or without food … You may mix the dose of oral solution with a small glass of water, coffee, orange juice or low-fat milk. Do not mix with tea, cola or alcoholic drinks.”
  7. HealthHub — Risperidone: what are some common side effects of this medication · read 2026-08-27
    what it says
    “Difficulty sleeping … Drowsiness or feeling tired … Increase in appetite, weight gain … Increased prolactin hormone in the body (hyperprolactinemia): This may result in changes in menstrual cycle in females … Muscle movement side effects”
  8. HealthHub — Risperidone: rare but serious side effects · read 2026-08-27
    what it says
    “Rarely this medication may cause: Seizures (fits); … neuroleptic malignant syndrome; Uncontrollable movements (such as in the face, tongue, jaw or other parts of the body) (tardive dyskinesia); … signs and symptoms of stroke”
  9. HealthHub — Risperidone: what precautions should I take · read 2026-08-27
    what it says
    “You have diabetes. Risperidone may sometimes worsen blood sugar control … Kidney or liver disease, breast cancer, irregular heartbeat or other heart problems, stroke … dementia, Parkinson's disease”
  10. HealthHub — Risperidone: what food or medication should I avoid · read 2026-08-27
    what it says
    “Avoid drinking alcohol while taking Risperidone as it can cause excessive sleepiness.”
  11. US label for risperidone tablets (Westminster Pharmaceuticals, effective 2025-12-07) via openFDA drug/label.json, Dosage and Administration · read 2026-08-27
    what it says
    “demonstrated in a range of 4 mg to 16 mg per day … doses above 6 mg per day … are generally not recommended … The safety of doses above 16 mg per day has not been evaluated”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.