San Francisco could become the first city in the country to require every pharmacy within its boundaries to always carry naloxone, a drug that reverses overdoses caused by fentanyl and other opioids. San Francisco Supervisor Matt Dorsey will introduce a bill Tuesday that, if approved, would require every pharmacy to always have in stock at least two nasal sprays containing the drug or face fines. There were 647 accidental drug overdose deaths in San Francisco in 2022, and over 70% of those deaths were attributable to fentanyl, according to the San Francisco Office of the Chief Medical Examiner.