Ritebeat 150mg Injection is used to treat various types of serious irregular heartbeat (arrhythmia) such as fibrillation and tachycardia (increased heart rate). It is an anti-arrhythmic type of medicine which rapidly restores your heart to a steady and regular rhythm. Ritebeat 150mg Injection is given by a slow drip (infusion) into a vein under the supervision of a doctor. Continuous monitoring of blood pressure and heart rate may be needed while this medicine is administered. It is important that you keep having the injections until your doctor decides it is safe to stop them. After this, your doctor may prescribe tablets instead of the injection. If you stop taking this medicine, you may get dangerous uneven heartbeats, which can be life-threatening. The most common side effects of this medicine include decreased blood pressure (hypotension), decreased heart rate (bradycardia), blurred vision, and application site reaction(pain, itching, and skin redness). This medicine can also cause problems with your liver, lungs, nerves, and thyroid gland. Ask your doctor what signs to look out for and report any symptoms you have. This medicine takes a long time to get cleared from the body. You may continue to have side effects after you stop using it. Ask your doctor about ways to prevent or reduce them.