How does risperidone work?
Risperidone blocks dopamine and serotonin receptors, which helps stabilise mood, reduce hallucinations, and improve thinking and behaviour.
What is risperidone used to treat?
Risperidone is commonly prescribed for:
- Schizophrenia (to manage delusions, hallucinations, and disorganised thinking)
- Bipolar disorder (to stabilise mood and reduce manic episodes)
- Irritability in autism spectrum disorder (ASD) (to help with aggression and mood swings)
Who can take risperidone?
Risperidone is suitable for most adults and children over 5 years old, depending on the condition being treated.
Who might not be able to take risperidone?
Risperidone may not be suitable if you:
- Have heart disease, high cholesterol, or a history of stroke
- Have diabetes or are at risk of high blood sugar
- Have a history of seizures or epilepsy
- Have liver or kidney disease
Can I take risperidone if I’m pregnant or breastfeeding?
Risperidone isn’t usually recommended during pregnancy or while breastfeeding, as it may affect the baby. Speak to your doctor if you are pregnant or planning to conceive.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is risperidone?
Risperidone is highly effective at managing symptoms of schizophrenia, bipolar disorder, and autism-related irritability, but it may take a few weeks to see full benefits.
What should I do if I take too much?
Taking too much risperidone can be dangerous and may cause:
- Severe drowsiness or confusion
- Low blood pressure and dizziness
- Seizures or irregular heartbeat
If you think you’ve taken too much, seek emergency medical help immediately.
What dose of risperidone is usually taken?
- For schizophrenia (adults): 2mg to 6mg once daily
- For bipolar disorder: 2mg to 6mg once daily
- For autism-related irritability (children): Dose varies depending on age and weight
Your doctor will determine the most suitable dose based on your condition.
Powered by pharmacies
With over 1,700 pharmacy partners across the UK, you can get the help you need, wherever you are based.
Our website and mobile app make it easy and convenient to manage your health needs and book services at a pharmacy nearby.
What are the side effects of risperidone?
Common side effects include:
- Weight gain
- Drowsiness or dizziness
- Increased appetite
- Dry mouth
- Constipation
Serious side effects, such as severe mood changes, difficulty breathing, or high blood sugar, require urgent medical attention.
How should I take risperidone?
Risperidone is taken as tablets, liquid, or long-acting injections, usually once daily.
When should risperidone be taken?
Risperidone is usually taken at the same time each day, often in the evening due to its sedative effects.
What are the brand names for risperidone?
Risperidone is available as a generic medicine, but some branded versions include:
- Risperdal
- Risperdal Consta (long-acting injection)
Final thoughts
Risperidone is an effective treatment for schizophrenia, bipolar disorder, and autism-related irritability, but it should be taken exactly as prescribed. If you experience side effects or need to stop taking it, speak to your doctor or pharmacist.
