The article has been retracted upon request of the first author since significant portions of the article were published earlier in the following article: Jung Hwan Lee, Min Jeong Kim, Hyeon Yoon, Cho Rok Shim, Hyun Ah Ko, Sun Ah Cho, Dongwon Lee, Gilson Khang (2013) Enhanced dissolution rate of celecoxib using PVP and/or HPMC based solid dispersions prepared by spray drying method, Journal of Pharmaceutical Investigation 43:205–213 DOI 10.1007/s40005-013-0067-2.