Physicochemical compatibility between ketoprofen lysine salt injections (OKi Fiale, PG060) and pharmaceutical products frequently used for combined therapy.

Ketoprofen lysine salt (Oki Fiale, PG060) is a non steroidal anti-inflammatory agent frequently administered by intramuscular route in association regimen with other drugs, such as steroidal anti-inflammatory, muscle relaxant, local anaesthetic and anti-spastic drugs or vitamins. The aim of this study was to investigate the physicochemical compatibility between ketoprofen lysine salt (Oki Fiale, PG060) and other injectable drugs frequently used in association. Physicochemical properties of ketoprofen lysine salt mixtures with different drugs, including colour, clarity, pH and drug content were observed or measured before and after (up to 3 hours) mixing at room temperature and under light protection. Results show that the association of Oki Fiale (PG060) with different drugs does not cause, up to three hours from mixing, any significant variation in the physicochemical parameters mentioned above. In conclusion, the results obtained demonstrated the physicochemical compatibility of Ketoprofen lysine salt (Oki Fiale, PG060) with several injectable drugs, except for Spasmex fiale (chemical incompatibility) and Xylocaina Astra 2% iniettabile mixed whit a volume ratio of 2/1 (physical incompatibility).