Investors should be especially wary of lower-rated bonds, especially those that back ancillary projects, such as dormitories, development agencies and hospitals, says Richard Ciccarone, chief research officer at McDonnell Investment Management in Oak Brook, Ill.

WSJ: Are High-Yield Munis Headed for a Fall?

Instead, they should consider investing in higher-rated general-obligation bonds those rated at least double-A which are backed by the full taxing power of a state, city or county, and bonds issued by essential services like water and sewers, Mr. Ciccarone says.

WSJ: Are High-Yield Munis Headed for a Fall?

Roger Blumenthal, director of the Johns Hopkins Ciccarone Preventative Cardiology Center, says that statins should always be used before turning to Zetia, but that everyone can't tolerate high doses and Zetia is still one of the best options for these patients.

FORBES: The Statin Showdown