Long-Acting Injectables (LAIs) | NAMI

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What is a long-acting injectible (LAI)?

Long-acting injectables (LAIs) are Injectable medications used for individuals living with mental illness.1, 2 LAIs are usually the same medication that is taken in pill form but when injected they allow for the slow release of medication into the blood over a longer period of time.1,2 LAIAs include: Abilify Maintena®, Aristada®,fluphenazine decanoate, Haldol decanoate®, Invega Sustenna®, Invega Trinza®, Invega Hafyera®, Risperdal Consta®, Perseris®, and Zyprexa Relprevv®. The LAI can last anywhere from 2-24 weeks with just one dose, which helps to control symptoms of mental illness.

What are LAIs used for?

LAIs are usually given to treat psychosis (hallucinations or delusions) in individuals living with schizophrenia.1-3 Some LAIs may be used as mood stabilizers in individuals living with bipolar disorder.5

How can a LAI help?

LAIs can help individuals stay on track with a medication plan.1-4 If someone is having trouble sticking to a plan, many things may happen. One problem could be needing to stay in a hospital until the illness is better.1-4 Other problems may include trouble with family and friends or other relationships.

When comparing LAIs to pill medications, LAIs may lower the chances of someone going to the hospital.1-3 LAIs allow for a steady level of medication in the blood.2-3 These steady levels help lower the chance of side effects.2-3 The LAIs may also help improve quality of life and satisfaction with medication.3

How are LAIs given?

LAIs are given as an injection in the muscles of the arm or bottom.1,4 When starting a LAI for the first time, individuals may also have to take pill medication for a few weeks.1,3 The pill allows the injection to have time to start working.3

What if I’m interested in a LAI?

If interested in a LAI, talk to a doctor. A LAI may not be right for every person living with mental illness. The main side effect of a LAI is pain at the injection site.1-3

When talking to a doctor, here are some questions to ask:4

Reasons individuals have trouble taking pill medications as directed:2

Advantages of LAIs:1-4


Provided by

(January 2023)

Kayla Johnson, PharmD, BCPP, January 2018

To view the references for this resource, please visit https://aapp.org/resource/patients/lai.

©2022 The American Association of Psychiatric Pharmacists (AAPP). AAPP makes this document available under the Creative Commons Attribution-No Derivatives 4.0 International License. Last Updated: January 2016.​

This information is being provided as a community outreach effort of the American Association of Psychiatric Pharmacists. This information is for educational and informational purposes only and is not medical advice. This information contains a summary of important points and is not an exhaustive review of information about the topic. Always seek the advice of a physician or other qualified medical professional with any questions you may have regarding medications or medical conditions. Never delay seeking professional medical advice or disregard medical professional advice as a result of any information provided herein. The American Association of Psychiatric Pharmacists disclaims any and all liability alleged as a result of the information provided herein. 

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