The ads have been popping up on billboards, buses and subways and in glossy magazines, with portraits of attractive men and women and a simple question in bold letters: What is Vivitrol?

Five years ago, Vivitrol was a treatment for opioid addiction that was struggling to find a market. Now, its sales and profile are rising fast, thanks to its manufacturers’ shrewd use of political connections, and despite scant science to prove the drug’s efficacy….

Read More