Invega Sustenna is not approved for use in older adults with dementia-related psychosis. Dizziness, sleepiness, and feeling less stable may happen with Invega Sustenna. This may lead to falling, which can cause broken bones or other health problems. To lower the chance of feeling dizzy or passing out, rise slowly if you have been sitting or lying down. Be careful going up and down stairs. Some people may get a severe muscle problem called tardive dyskinesia. This problem may lessen or go away after stopping Invega Sustenna, but it may not go away. The risk is greater with diabetes and in older adults, especially older women. The risk is greater with longer use or higher doses, but it may also occur after short-term use with low doses. Call your doctor right away if you have trouble controlling body movements or problems with your tongue, face, mouth, or jaw like tongue sticking out, puffing cheeks, mouth puckering, or chewing. Low white blood cell counts have happened with drugs like this one. This may lead to a higher chance of infection. Rarely, infections have been deadly. Tell your doctor if you have ever had a low white blood cell count. Call your doctor right away if you have signs of infection like fever, chills, or sore throat.