Pfizer lost its patent on the cholesterol-lowering drug Lipitor on November 30 -- which spells big savings for many of the 8.7 million Americans who take the medication. The patent’s expiration ...

Pfizer’s monopoly over the blockbuster cholesterol-reducing molecule atorvastatin, trade name Lipitor, ends today (November 30) with the expiration of the patent that has brought the company over $100 ...