“…The first method requires the regeneration of the columns after each analysis, the latter assays require complex sample preparation involving double derivatization (esterification of the carboxylic acid moiety and the acetylation of the amino group) procedure and expensive chiral capillary columns. In the developed high-performance liquid chromatographic (HPLC) methods vigabatrin has been analysed either alone [8][9][10][11] or with the other drugs such as gabapentin [12][13][14], haloperidol and amantadine [15]. Most of these methods involve the use of OPA derivatization and fluorimetric detection with isocratic [9,14] or gradient [10,12,13] system.…”