https://www.sciencedaily.com/releases/2019/11/191111100914.htm

Brand-name drug discount cards -- also known as co-pay cards -- are coupons offered by brand drug manufacturers to encourage patients to use brand-name drugs even after much cheaper generics become available.

Despite often boasting savings for customers, however, the study's findings show drug discount cards actually increased private insurer costs by 46 per cent and public insurer costs by 1.3 per cent, compared to if patients purchased generics instead.