The influence of intravenous anesthesia on the body mainly depends on what kind of drugs are injected. Propofol (or propofol), which is commonly used, has little accumulation in the body, is mainly metabolized by the liver and excreted by the kidney, and has little effect on the body, including the brain. This is a very safe anesthetic. Other anesthetics that can be injected intravenously, such as ketamine, are relatively safe, but they can cause a temporary increase in brain pressure and intraocular pressure. If glaucoma or epilepsy patients have adverse reactions, it is still a very safe and effective anesthetic for other patients. The excretion of anesthetics is similar to that of most drugs, mainly through liver metabolism and urine through kidney.