Only about 1 in 3 pharmacies across the country are able to fill prescriptions for a critical treatment option for opioid addiction, according to a new study from the University of Southern California. 

Researchers at the USC Schaeffer Center for Health Policy and Economics found that only 39% of pharmacies in the United States were able to fill a prescription for the medication buprenorphine, a mild opioid used to treat opioid use disorder, according to a study published in the journal Health Affairs on Tuesday.