A potent painkiller, and the drug maker’s marketing, are faulted in a woman’s death

STRATFORD, N.J. — There was a stranger waiting for Sarah Fuller when she visited her doctor to discuss switching medications for her back and neck pain — a saleswoman pitching a prescription version of the potent opioid fentanyl.

The drug, called Subsys, is so powerful, and the risk of addiction and overdose so formidable, that the Food and Drug Administration requires doctors to undergo special training before they are allowed to prescribe it. And it has approved Subsys only for cancer patients who suffer intense flares of pain.  READ MORE