What Is Risperidone? Uses, Dosage, and What You Need to Know in 2026

Risperidone is one of the most widely prescribed psychiatric medications in the United States. Originally approved by the FDA in 1993, it has since become a cornerstone of treatment for schizophrenia, bipolar disorder, and autism-related irritability. Here's a comprehensive overview of what risperidone is, what it treats, and what you should know before taking it.

What Is Risperidone?

Risperidone is an atypical (second-generation) antipsychotic medication. It is sold under the brand name Risperdal, along with several newer brand formulations including Risperdal Consta (long-acting injectable), Perseris, Uzedy, and Rykindo. In 2023, risperidone was among the top 200 most prescribed medications in the United States, with over 2 million prescriptions written. The generic version dominates the market and is widely available at most pharmacies at low cost.

Risperidone is classified as an atypical antipsychotic because, unlike older "first-generation" antipsychotics like haloperidol, it targets both dopamine and serotonin receptors. This dual mechanism is associated with better tolerability, particularly for the movement-related side effects that plagued older antipsychotics.

What Is Risperidone Approved to Treat?

Risperidone has received FDA approval for three main indications:

1. Schizophrenia — In adults and adolescents ages 13–17. Approved 1993 (adults), 2007 (adolescents).
2. Bipolar I disorder — Acute manic or mixed episodes in adults and youth ages 10–17, as monotherapy or adjunctive therapy. Approved 2003 (adults), 2007 (youth).
3. Irritability associated with autism spectrum disorder — In children and adolescents ages 5–17, including aggression, self-injury, and severe temper tantrums. Approved 2006.

Additionally, the long-acting injectable formulation (Uzedy) received FDA approval in 2025 for maintenance treatment of bipolar I disorder in adults, adding to the LAI options available for patients with adherence challenges.

Off-Label Uses of Risperidone

Prescribers also use risperidone off-label for conditions where clinical evidence supports its use, including:

• Augmentation for treatment-resistant unipolar depression (alongside an antidepressant)
• Post-traumatic stress disorder (PTSD)
• Obsessive-compulsive disorder (OCD) augmentation
• Tourette syndrome
• Delirium management in non-dementia settings

What Dosage Forms Does Risperidone Come In?

Risperidone is available in several forms, each with different uses:

• Oral tablets: 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg. The most commonly dispensed form.
• Orally disintegrating tablets (ODT): 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg. Dissolve on the tongue without water — useful for patients with swallowing difficulties.
• Oral solution: 1 mg/mL. Can be mixed with water, orange juice, coffee, or low-fat milk. Do not mix with tea or cola.
• Long-acting injectable (Risperdal Consta): 12.5 mg, 25 mg, 37.5 mg, 50 mg. Injected into the muscle every 2 weeks. Requires a 3-week oral overlap at initiation.
• Extended-release subcutaneous injections (Perseris, Uzedy, Rykindo): Monthly or bi-monthly under-the-skin injections. No oral supplementation required at initiation for some formulations.

Typical Dosing by Condition

• Schizophrenia (adults): Target 4–8 mg/day; start 2 mg/day; maximum 16 mg/day
• Schizophrenia (adolescents 13–17): Target 3 mg/day; start 0.5 mg/day; maximum 6 mg/day
• Bipolar I mania (adults): 1–6 mg/day
• Autism irritability (children 5–17): 0.5–3 mg/day (lower weight) or 0.5–6 mg/day (higher weight)

Is Risperidone a Controlled Substance?

No. Risperidone is not on the DEA's controlled substance schedule. This means any licensed prescriber can write for it without special DEA registration, it can be prescribed via telehealth, and prescriptions can be called in by phone. Patients are not subject to quantity limits or early refill restrictions that apply to Schedule II drugs.

How to Take Risperidone

• Can be taken with or without food
• Take at the same time(s) each day for consistency
• Can be taken once daily or split into two doses (twice daily)
• If sedation is a problem, taking the full dose at bedtime may help
• Never stop abruptly — always consult your doctor before discontinuing

Finding Risperidone in Stock

Generic oral risperidone is widely available in 2026 and not on the FDA shortage list. However, specific strengths or formulations may be harder to find at individual pharmacies. If you're having trouble filling your prescription, medfinder can call pharmacies near you to check stock and text you results, saving hours of hold time.

The Bottom Line

Risperidone is a well-established, widely used atypical antipsychotic with more than three decades of clinical use. It treats schizophrenia, bipolar I disorder, and autism-related irritability effectively, with a reasonable tolerability profile and low cost as a generic. For a deeper explanation of how risperidone works in the brain, see our guide: how does risperidone work?.