Figure 2From: Development and validation of LC/MS/MS method for the simultaneous determination of montelukast, gliclazide, and nifedipine and its application to a pharmacokinetic study Mass spectra of the positive ion of montelukast (MO), gliclazide (GL), nifedipine (NI) and negative ion zaferolukast (ZA) internal standard. Back to article page