More than 100 researchers, scientists and public health professionals want fentanyl-related substances to no longer be Schedule I drugs — saying a different classification has the potential to unlock research on those drugs to treat opioid addiction or other mental health conditions. Daniel Payne and Ben Leonard unpack a Tuesday letter sent to the White House. Plus, Jason Gibbons, a postdoctoral fellow at Johns Hopkins University, explains a new study on using buprenorphine in Medicare patients.

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