The declines come amid a flurry of new insurance company policies and state laws setting limits on opioid prescribing. States have also been tracking opioid prescriptions more closely through electronic databases and requiring more doctors to check the databases for signs of “doctor shopping” or misuse before giving a patient opioids. In New Jersey, the former governor Chris Christie said this year that a new law limiting initial opioid prescriptions there to a five-day supply had led to a 15 percent decrease in overall opioid prescriptions.
Two years ago, the Centers for Disease Control and Prevention released the first national guidelines for prescribing opioids, recommending that doctors try pain relievers like ibuprofen first and that they give most patients only a few days’ supply of opioids. Another important development that has helped propel the decline came in 2014, when the federal government tightened prescribing rules for one of the most popular painkillers: hydrocodone combined with a second analgesic, like acetaminophen.
“I think the message is we are seeing measurable impact from all that’s going on,” said Murray Aitken, executive director of the IQVIA Institute, which published the data as part of a broader report on drug use and spending last year. “These numbers don’t tell you what exactly is driving the acceleration in the drop, but we think it’s useful to get the 2017 numbers out there so people can see what’s happening.”
According to the report, prescription opioid volumes peaked in 2011 at the equivalent of 240 billion milligrams of morphine, declining by 29 percent to 171 billion in 2017. Still, that was enough for every American adult to have 52 pills — “a fivefold higher level than in 1992,” Mr. Aitken said.
Amid a push by the Trump administration and many states to expand access to medications that help treat addiction by curbing cravings and withdrawal symptoms, the report also found that the number of people newly prescribed these medications, including buprenorphine and naltrexone, nearly doubled over the course of 2017, to 82,000 per month from 42,000.
But Dr. G. Caleb Alexander, co-director of the Johns Hopkins Center for Drug Safety and Effectiveness, cautioned that there was no way of knowing from the data whether the prescriptions came with behavioral therapy and other supports, as most experts recommend for people taking addiction medication.
“The issue here is there are startling gaps in quality of care for people receiving medication-assisted treatment,” he said. “So it’s really important that we do a better job of improving it and building out systems of care that can deliver it en masse.”