John Kapoor, former CEO of Insys Therapeutics, has been charged with conspiring to push the company's signature drug for unacceptable uses through a series of bribes and kickbacks. Subsys, as the drug is known, transmits the extremely powerful narcotic fentanyl in spray form, allowing it to be placed beneath the tongue for fast, potent pain relief. It is meant only for treating cancer patients suffering from severe pain.But according to prosecutors, Kapoor and several other former high-ranking executives at the company conspired to bribe doctors to write "large numbers of prescriptions for the patients, most of whom were not diagnosed with cancer."