Drugs that can easily cause sudden cardiac death include deacetylmorillic acid, quinidine, potassium chloride and so on. 1. Deacetylrhodopsin: belongs to cardiotonic agent, clinically it can strengthen myocardial contraction to treat heart failure and other diseases, the drug has accumulation, can cause supraventricular tachycardia and other serious cardiac arrhythmia, leading to sudden death. 2. Quinidine: belonging to the anti-arrhythmic drugs, mainly used for atrial fibrillation or atrial flutter after electrical reversal of maintenance therapy, the drug can cause can cause conduction block, induced cardiac arrest, resulting in sudden death. 3. Potassium chloride: clinically used in the treatment or prevention of hypokalemia, the dose is too large to induce hyperkalemia, high potassium has cardiotoxicity, if not treated in time, it will lead to cardiac arrest, resulting in sudden death. In addition, intravenous infusion of this drug, if the speed is too fast, can also induce cardiac arrest and lead to sudden death. Clinically there are many drugs that can cause sudden death, if you take these drugs, there are not adapted to consult a doctor in time to avoid delaying the condition.