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

Invega is a brand-name prescription medication that has been used to treat serious mental health conditions since its FDA approval in 2006. If you or someone in your family has been prescribed Invega — or if your doctor is considering it — this guide gives you a clear, accurate overview of what it is, what it treats, how to take it, and what to expect.

What Is Invega?

Invega is the brand name for paliperidone, an atypical (second-generation) antipsychotic medication manufactured by Janssen Pharmaceuticals (a division of Johnson & Johnson). Paliperidone is the primary active metabolite of risperidone (Risperdal), meaning it's what risperidone is converted to in the human body. Invega was first approved by the FDA in December 2006 for schizophrenia in adults, and again in 2009 for schizoaffective disorder.

Paliperidone is on the World Health Organization's List of Essential Medicines, reflecting its importance as a foundational treatment for psychotic disorders globally.

What Conditions Does Invega Treat?

Invega has two FDA-approved indications:

Schizophrenia: In adults AND in adolescents ages 12–17. Invega treats the positive symptoms (hallucinations, delusions, disorganized thinking) and negative symptoms (flat affect, social withdrawal, reduced motivation) of schizophrenia.

Schizoaffective disorder: In adults, as monotherapy OR as an adjunct to mood stabilizers (like lithium or valproate) and/or antidepressants. Schizoaffective disorder combines features of schizophrenia with a mood disorder (depression or bipolar-type).

Invega is NOT approved for dementia-related psychosis (and carries a Boxed Warning against this use).

What Forms Does Invega Come In?

Paliperidone is available in several formulations:

Invega ER (oral extended-release tablets): Available in 1.5 mg, 3 mg, 6 mg, 9 mg, and 12 mg. Taken once daily by mouth. Generic paliperidone ER is also available and FDA-approved as therapeutically equivalent.

Invega Sustenna (paliperidone palmitate, monthly injection): A long-acting injectable (LAI) given once per month. FDA-approved for schizophrenia and schizoaffective disorder in adults. Available in strengths from 39 mg to 234 mg per injection.

Invega Trinza (paliperidone palmitate, quarterly injection): Given every 3 months. Only for patients already stabilized on Invega Sustenna for at least 4 months. Available in 273 mg, 410 mg, 546 mg, and 819 mg.

Invega Hafyera (paliperidone palmitate, every-6-month injection): Given every 6 months. FDA-approved in September 2021. Only for patients already established on Sustenna or Trinza. Available in 1,092 mg and 1,560 mg doses.

What Is the Typical Dosage?

For adults with schizophrenia or schizoaffective disorder on oral Invega:

Starting dose: 6 mg once daily in the morning. No titration is required — you can start at the effective dose immediately.

Range: 3–12 mg per day. Your doctor may increase by 3 mg/day at intervals of at least 5 days if needed.

Adolescents (12–17) with schizophrenia: Starting dose 3 mg/day (up to 12 mg/day based on weight and response).

For patients with kidney problems (renal impairment), the dose must be reduced — your doctor will adjust it based on your kidney function (creatinine clearance).

How Do You Take Invega?

Important instructions for taking Invega oral tablets:

Swallow whole — never crush, chew, or split. Invega uses OROS technology that is destroyed if the tablet is broken.

Take at the same time every day, ideally in the morning. Consistency matters — food can increase absorption by 50–60%, so try to take it with or without food consistently.

Don't be alarmed if you see the tablet shell in your stool — the medication has already been absorbed.

Avoid alcohol — it can increase drowsiness and dizziness.

Is Invega a Controlled Substance?

No. Invega (paliperidone) is not a controlled substance and has no DEA schedule. This means it can be prescribed by any licensed prescriber, refills do not require a new visit in the same way controlled substances do, and it can be prescribed via telehealth without special restrictions.

How Is Invega Different From Risperdal (Risperidone)?

Paliperidone is actually the metabolite of risperidone — the active form that risperidone is converted to in the body. Invega delivers paliperidone directly, bypassing liver metabolism. This makes it more predictable in patients with liver issues and allows true once-daily dosing without the same variability seen with risperidone metabolism (which is affected by the CYP2D6 enzyme).

Want to understand more about how Invega works in the brain? See our deep-dive guide: How Does Invega Work? Mechanism of Action Explained in Plain English.

Having trouble finding Invega at your pharmacy? medfinder calls local pharmacies to check stock and texts you the results.