Examples of safe statins include atorvastatin (Lipitor), rosuvastatin (Crestor) and simvastatin (Zocor). As of July 2015, simvastatin is the most used statin available on the market and the second-most drug that is prescribed in the United States.
Atorvastatin (Lipitor), rosuvastatin (Crestor) and simvastatin (Zocor) all work essentially the same way by reducing the body's ability to produce cholesterol. They work by inhibiting the liver from forming cholesterol in the body and from absorbing excess cholesterol that has been lined in the arteries. There are differences between them, though, including the relative cost per dose and how effective the dose should be when targeting the amount of bad cholesterol in a patient. Statins should only be taken after a risk assessment has been made by a medical professional. They are only safe for people that have a pre-existing cardiovascular disease, diabetes, are at risk for a heart attack, or are healthy but still have high cholesterol.
Statins are not without controversy, however, as there are many potentially harmful side effects from their use. Potential adverse effects include muscular and skeletal problems, cognitive impairment, diabetes, cataracts, and cancer. Because of this, it is important that a medical professional's opinion be sought before using statins.