The good thing about pravastatin and pitavastatin is that they can lower cholesterol, lipids, and stabilize plaque, the bad thing is that they may have adverse reactions such as liver damage and myalgia. 1. The main role of statins is used to lower cholesterol, lower lipids, prevent the progress of atherosclerosis, and more importantly, stabilize the plaque formed on the walls of blood vessels. Elderly patients due to coronary heart disease, hypertension, diabetes mellitus and other medical history can lead to the formation of atherosclerosis, arterial vascular wall is easy to form plaques, once ruptured can form a thrombus, blocking the blood vessels, so that the local tissue ischemia necrosis. 2. Statins have an important role and may also have certain side effects and adverse reactions. There may be acute liver injury, elevated aminotransferases, liver function damage, and in some patients may cause rhabdomyolysis, resulting in muscle pain and other symptoms. Pravastatin and pitavastatin are recommended to choose one or the other statin to take under the guidance of a doctor.