Open Label, Randomized, Two way crossover, comparative evaluation of relative bioavailability of two formulations of Sumatriptan Succinate Tablets 100 mg (Dr. Reddy's Laboratories Limited, India) With the Reference Formulation Imitrex® 100 mg Tablet (Glaxosmithkline, USA)Under Fed Conditions in Healthy Human Adult Subjects. 50 healthy, adult, human male subjects were enrolled in the study and 43 subjects are completed the study.