Law banning copay coupons didn't boost generic drug use, study finds

A 2017 California law that banned drugmaker copay coupons failed to increase the use of generic drugs, according to a study from Brigham and Women's Hospital in Boston.

The study, published June 15 in JAMA, found that the law did not meet its goal to boost use of generic drugs instead of patients' relying on copay coupons for expensive, brand-name drugs, within the first year of it being implemented.