640_PainkillersFederal health regulators on Thursday approved the first hard-to-abuse version of the painkiller hydrocodone, offering an alternative to a similar medication that has been widely criticized for lacking such safeguards. The Food and Drug Administration approved Purdue Pharma’s Hysingla ER for patients with severe, round-the-clock pain that cannot be managed with other treatments. The once-a-day tablet is designed to thwart abuse via chewing, crushing, snorting or injecting. The FDA said the medication is difficult to crush, break or dissolve. Purdue Pharma’s new drug poses a direct commercial challenge to Zogenix’s much-debated drug Zohydro, a twice-a-day hydrocodone tablet approved by the FDA last year. More