** Shares of drugmaker Amneal Pharmaceuticals AMRX.O rise 2% to $10.02
** Company says the U.S. FDA has approved Amneal's sodium oxybate oral solution for the treatment of cataplexy or excessive daytime sleepiness in patients 7 years of age and older with narcolepsy
** Amneal's solution is a generic version of Jazz Pharmaceuticals' JAZZ.O sleep disorder drug, Xyrem
** Narcolepsy is a chronic neurological disorder that disrupts the body's ability to regulate sleep-wake cycles
** Amneal says it had previously been distributing an authorized generic of sodium oxybate oral solution in limited quantities
** Including session moves, stock up 25.6% YTD
(Reporting by Siddhi Mahatole)
((siddhi.mahatole@thomsonreuters.com))