Schizophrenia is a chronic and debilitating psychiatric disorder that is associated with successive relapses.1,2 Each relapse adds an additional biological toll on the patient, including functional decline, increased treatment resistance, and progressive brain atrophy. For these reasons, targeting common drivers of relapse is a crucial goal of schizophrenia treatment.3
Nonadherence has been identified as one of the main risk factors contributing to relapse in schizophrenia. Nonadherence affects as many as two-thirds of patients with schizophrenia, and addressing it can be a challenge.4 With oral treatments, it can be difficult to identify if—and to what extent—a patient has been adherent to their daily medications until after psychotic symptoms emerge.5
LAIs can help to address this adherence gap by removing the need for patients to take a daily antipsychotic and making it clear to clinicians when a patient has missed a dose.6,7 The current LAI landscape includes a number of options that deliver different molecules and additional features.8 Clinician and patient discussions of LAIs are often tied to practical, day-to-day administration details. The effects of these differences on patients are important when selecting an LAI.7 UZEDY is a treatment option that offers an array of features that both clinicians and patients may prefer when selecting an LAI.9
The streamlined initiation of UZEDY is possible because it utilizes the copolymer drug-delivery technology of SteadyTeq™ to control the release of risperidone in two phases—an initial release of risperidone, allowing patients to reach therapeutic plasma concentrations within 6 to 24 hours of a single dose, followed by a phase of steady release of medication over the dosing interval.10 For patients who have never taken risperidone, tolerability must be established before starting UZEDY.11 For all other patients, initiation of UZEDY is a single injection, without the need for a loading dose or oral supplementation.9,11
UZEDY offers flexible dosing options that correspond to up to 5 mg of oral risperidone.11 Both the 1- and 2-month dosing intervals of UZEDY are available in 4 different dosage strengths, starting at a dose equivalent to 2 mg of oral risperidone (Figure 1).11 This range of dosing intervals and strengths allows UZEDY to be tailored to the individual needs and preferences of each patient.11
Figure 1. Available Dosing Interval and Dosage Strength Options for UZEDY

The administration of UZEDY involves a subcutaneous injection with a 5/8 inch, 21-gauge needle.11 UZEDY comes as a prefilled syringe and must be administered by a healthcare professional.11 Patients have the option of receiving an injection in the back of the upper arm or the abdomen, which allows administration to be tailored to the patient’s preference.11 UZEDY, as a subcutaneous injection, utilizes a shorter needle than the intramuscular LAIs that are currently available (Figure 2).11-17
Figure 2. Needle Sizes of Currently Available LAIs

UZEDY was evaluated in the double-blind, placebo-controlled, randomized relapse prevention study RISE, which compared UZEDY once monthly (Q1M) and once every 2 months (Q2M) with placebo in patients with schizophrenia.9 In RISE, patients receiving UZEDY Q1M demonstrated a significantly reduced risk of relapse by 80% compared with patients receiving placebo (P<0.0001) (Figure 3). In patients receiving UZEDY Q2M, the reduction in risk of relapse was 62.5%, a significant reduction compared with placebo (P<0.0001).9
Figure 3. UZEDY Significantly Reduces Risk of Relapse for Patients With Schizophrenia

CI, confidence interval; HR, hazard ratio.
The safety profile of UZEDY in patients with schizophrenia is based on adequate and well-controlled studies of oral risperidone, which has been well-characterized. UZEDY is expected to have a safety profile similar to that of corresponding oral risperidone doses of 2 to 5 mg daily.9
UZEDY is an LAI that offers features that may benefit both clinicians and patients. The flexible dosing options of UZEDY allow clinicians to adjust their treatments while taking patient preferences for frequency of injections into consideration.11 The initiation of UZEDY—a single injection requiring no loading dose or oral supplementation—is a streamlined option that clinicians may prefer.9,11 Finally, patients may prefer a subcutaneous injection with the option to inject in the back of the upper arm or abdomen.11 Given the demonstrated efficacy and safety in combination with the features outlined above, UZEDY is a treatment option that clinicians and patients should consider when initiating an LAI.9,11
- Kane JM, Correll CU. Optimizing treatment choices to improve adherence and outcomes in schizophrenia. J Clin Psychiatry. 2019;80(5):IN18031AH1C.
- Alvarez-Jiminez M, Priede A, Hetrick SE, et al. Risk factors for relapse following treatment for first episode psychosis: a systematic review and meta-analysis of longitudinal studies. Schizophr Res. 2012;139(1-3):116-128.
- Nasrallah HA. 10 devastating consequences of psychotic relapses. Curr Psychiatry. 2021;20(5):9-12.
- Kaplan G, Casoy J, Zummo J. Impact of long-acting injectable antipsychotics on medication adherence and clinical, functional, and economic outcomes of schizophrenia. Patient Prefer Adherence. 2013;7:1171-1180.
- Masand PS, Roca M, Turner MS, Kane JM. Partial adherence to antipsychotic medication impacts the course of illness in patients with schizophrenia: a review. Prim Care Companion J Clin Psychiatry. 2009;11(4):147-154.
- Blackwood C, Sanga P, Nuamah I, et al. Patients’ preference for long-acting injectable versus oral antipsychotics in schizophrenia: results from the patient-reported medication preference questionnaire. Patient Prefer Adherence. 2020;14:1093-1102.
- American Psychiatric Association. The American Psychiatric Association Practice Guideline for the Treatment of Patients With Schizophrenia. 3rd ed. American Psychiatric Association; 2021.
- Correll CU, Citrome L, Haddad PM, et al. The use of long-acting injectable antipsychotics in schizophrenia: evaluating the evidence. J Clin Psychiatry. 2016;77(suppl 3):1-24.
- Kane JM, Harary E, Eshet R, et al. Efficacy and safety of TV-46000, a long-acting, subcutaneous, injectable formulation of risperidone, for schizophrenia: a randomised clinical trial in the USA and Bulgaria. Lancet Psychiatry. 2023;10(12):934-943.
- Perlstein I, Merenlender Wagner A, Gomeni R, et al. Population pharmacokinetic modeling and simulation of TV-46000: a long-acting injectable formulation of risperidone. Clin Pharmacol Drug Dev. 2022;11(7):865-877.
- UZEDY® (risperidone) extended-release injectable suspension Current Prescribing Information. Parsippany, NJ: Teva Neuroscience, Inc.
- Abilify Maintena® (aripiprazole). Prescribing Information. Otsuka America Pharmaceutical, Inc.
- Abilify Asimtufii® (aripiprazole). Prescribing Information. Otsuka Pharmaceutical, Inc.
- Aristada® (aripiprazole lauroxil). Prescribing Information. Alkermes, Inc.
- Invega Sustenna® (paliperidone palmitate). Prescribing Information. Titusville, NJ: Janssen Pharmaceuticals, Inc.
- Invega Trinza® (paliperidone palmitate) Prescribing Information. Titusville, NJ: Janssen Pharmaceuticals, Inc.
- Risperdal Consta® (risperidone). Prescribing Information. Titusville, NJ: Janssen Pharmaceuticals, Inc.



