Drug cuts heroin cravings, but is expanding use worth the risk?

Opiate addiction treatment
Tanya, who uses Suboxone to treat her addiction to painkiller opiates, talks with nurse and social worker Cindy Vobr, not pictured, during a counseling session Wednesday, June 25, 2014 at Valhalla Place in Woodbury.
Jennifer Simonson/MPR News