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In this  Friday, Sept. 27, 2013, photo, Cindy Whitehead holds a tablet of flibanserin in her office at Sprout Pharmaceuticals in Raleigh, N.C. Sprout Pharmaceuticals said Wednesday, Dec. 11, 2013, it has reached an impasse with the Food and Drug Administration over its drug, flibanserin. The daily pill is designed to increase libido in women by acting on brain chemicals linked to mood and appetite. (AP Photo/Allen G. Breed) Allen Breed/AP Photo