The potential for commonly infused drug solutions to support or inhibi
t microbial growth was explored in this study. Drugs examined were mid
azolam HCl, morphine sulphate, fentanyl citrate, pethidine HCl, bupiva
caine HCl, atracurium besylate, vecuronium bromide, adrenaline, dopami
ne, dobutamine, noradrenaline, isoprenaline, glyceryl trinitrate, sodi
um nitroprusside and propofol. All drugs were studied in both diluted
and undiluted forms. Of the 15 medications investigated, all except pr
opofol were found to be bactericidal and to reduce fungal growth.