Co-Pay Coupons for Patients, but Higher Bills for Insurers - NYTimes.com

Co-Pay Coupons for Patients, but Higher Bills for Insurers - NYTimes.com: "The reason, it turned out, was that patients were using a card distributed by the maker of an expensive antibiotic used to treat acne, sharply reducing their insurance co-payments. With their out-of-pocket costs much lower, consumers had switched from generic alternatives to the more expensive drug."