Drugmakers Spent Millions Promoting Opioids To Patient Groups, Senate Report Says

OxyContin pills arranged for a photo at a pharmacy in Montpelier, Vt. in a photo taken in 2013.

The report released by Missouri Democratic Sen. Claire McCaskill says the cozy relationship between pain advocacy groups and pharmaceutical companies may have played a key role in the opioid crisis.

(Image credit: Toby Talbot/AP)