A U.S. drug maker's patent on one of the most popular drugs has expired.

FOX's Colleen Cappon has more in today's edition of Housecall For Health:

The world's second most popular drug, Plavix is going generic. The FDA just approved permission to sell the blood thinner to seven companies, after the drug's U.S. patent recently expired. The drug is taken daily by millions to prevent heart attacks and strokes, and will be dropping from about $200 dollars a month to just $40 dollars. Bristol Myers is trying to keep profits up by offering coupons for a discount off the brand.

Housecall For Health. I'm Colleen Cappon, FOX News Radio.