On OpiumA groundbreaking meditation on pain, painkillers, and dependence from a prescription opioid user. Her writing has been described as "measured," "sensuous," and "compelling." In 2016, Carlyn Zwarensteins short narrative on pain made the Globe and Mails Top 100 Books. Now, she returns with a seductive dive into opioids and the nature of dependence. North Americans are the worlds most prolific users of opioid painkillers. In On Opium, Zwarenstein