E-Mail IMAGE: a recent study by Indiana University researchers found the bill, called the Comprehensive Addiction and Recovery Act (CARA), has not greatly increased the amount of nurse practitioners prescribing buprenorphine, especially... view more Credit: Indiana University Since 2016, a federal regulation has allowed nurse practitioners and physician assistants to obtain a waiver to prescribe buprenorphine, a medication used to treat opioid use disorder as a medication assisted treatment. But a recent study by Indiana University researchers found the bill, called the Comprehensive Addiction and Recovery Act (CARA), has not greatly increased the amount of nurse practitioners prescribing buprenorphine, especially in states that have further restrictions. The study was published in