CNN -- A statin can be a lifesaver if you’re at risk of heart disease, but some people who take the cholesterol-lowering drugs -- up to 20 percent, by some estimates -- have to stop because of muscle pain, the most common side effect. (Nearly 30 million people filled a statin prescription in 2005, according to the Agency for Healthcare Research and Quality. Statins include popular drugs such as Crestor, Lipitor, and Zocor.
