Definium 5mg Sublingual tablet is taken by mouth without food. However, it is advisable to take it at the same time each day as this helps to maintain a consistent level of medicine in the body. Take this medicine in the dose and duration as advised by your doctor and if you have missed a dose, take it as soon as you remember. Do not skip any doses and finish the full course of treatment even if you feel better. It is important that this medication is not stopped suddenly without talking to doctor as it may worsen your symptoms.

Some common side effects of this medicine include nausea, increased saliva production, and taste change. Initially, this medicine may cause a sudden drop in the 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. However, modifying your lifestyle by having a healthy diet and doing exercise regularly can reduce this side effect.

Before taking this medicine it is important to inform doctor if your suffering from high body temperature and muscle stiffness (neuroleptic malignant syndrome), have had abnormal tongue or face movements (dyskinesia), or liver problems.