So drug company executives moved quickly to make its production worthwhile. It could only be prescribed by a medical practitioner registered with the Drug Enforcement Administration, and it was among several cancer pain medicines already available. Kapoor founded Insys Therapeutics in 1990. In addition to Insys Therapeutics, which went public in 2013, Kapoor founded Illinois-based Akorn Pharmaceuticals. That has fallen amid his company's legal woes, but the magazine still listed Kapoor's worth at $1.75 billion on Friday.

Source: ABC News October 27, 2017 19:52 UTC