SAN DIEGO, April 13, 2011 (GLOBE NEWSWIRE) -- Zogenix, Inc. (Nasdaq:ZGNX) today reported clinical data from its Phase 4 open-label, multicenter study of SUMAVEL® DosePro ® (sumatriptan injection) Needle-free Delivery System. The clinical data were presented in two poster presentations at the 63rd Annual Meeting of the American Academy of Neurology (AAN) in Honolulu, Hawaii.