Don 4mg Tablet 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 Don 4mg Tablet is taken with or without food preferably at night 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 Take this in the dose and duration as advised by your doctor and if you have missed a dose take it as soon as you remember It is important that this medication is not 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 or seizures Some common side effects of this medicine include insomnia sedation somnolence parkinsonism and headache Initially this medicine may cause a sudden drop in blood pressure when you change positions so it is better to rise slowly if you have been sitting or lying down 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 This medicine may increase your weight but modifying your lifestyle by having a healthy diet and exercising regularly can reduce this side effect