Invega Sustenna 150mg Injection is used in the treatment of schizophrenia (a mental disorder that can result in hallucinations or delusions and also adversely affects a person’s ability to think and behave) and mania. Invega Sustenna 150mg Injection is given under the supervision of a healthcare professional. However, it is advised to take it at the same time each day as this helps to maintain a consistent level of medicine in the body. This medication should not be stopped suddenly without talking to your doctor as it may worsen your symptoms. However, discontinue this medicine immediately if you experience Neuroleptic malignant syndrome (NMS), characterized by fever, muscle rigidity, and altered consciousness. Some common side effects of this medicine include injection site reactions (pain, swelling, redness), nystagmus (involuntary eye movement), and tremor. It also causes dizziness and sleepiness, so do not drive or do anything that requires mental focus until you know how this medicine affects you. You should be cautious if you are using this medicine as it may increase the risk of developing diabetes, so it is better to monitor glucose regularly. Inform your doctor if you develop any unusual changes in mood or behavior, new or worsening depression, or suicidal thoughts while taking this medicine.