The number of prescriptions of opioids declined by 16 percent in 2016 compared to a peak in 2012, according to a new report.
The report released Tuesday by consulting firm Avalere Health found new painkillers designed to deter abuse make up less than 5 percent of the market.
There were roughly 225,000,000 prescriptions of opioids that include hydrocodone and oxycodone dispensed in 2016, compared to roughly 275,000,000 in 2012, according to Avalere.
Federal data shows 91 Americans a day die from an opioid overdose.
The firm used prescription data from the tracking firm QuintilesIMS.
In 2016, 97 percent of the painkillers distributed were generic and the rest were brand-name products.
Prescriptions of abuse-deterrent formulations that make an opioid harder to snort or inject have also lagged. There are 10 abuse-deterrent opioids on the market.
However, of the opioids dispensed in 2016, only 2 percent were abuse deterrent, Avalere found.
Avalere disclosed that Purdue Pharma, maker of popular opioid Oxycontin, helped fund the report but the firm said it kept editorial control.