From CBS Market Watch:
Lipitor, Zocor are top sellers
Americans' battles with high cholesterol and stomach troubles generated the most sales for pharmaceutical companies last year, according to a new study.

Pfizer's Lipitor, a cholesterol-reducer in the family of drugs known as statins, was the leading U.S. prescription drug sold in 2003 for the third consecutive year, according to a survey released Tuesday from IMS Health, which does market research for the health-care industry.

Another statin -- Merck's Zocor -- remained in second place, while TAP Pharmaceutical's chronic heartburn remedy Prevacid came in third.