DETERMINATION OF IRBESARTAN AND SINENSETIN SIMULTANEOUSLY BY LIQUID CHROMATOGRAPHY TANDEM MASS SPECTROMETRY AND THEIR APPLICATION TO DRUG INTERACTION STUDY IN RAT PLASMA Journal title: International Journal of Pharmacy and Pharmaceutical Sciences Authors: Nurmeilis ., Yahdiana Harahap, Fadlina Chany Saputri, Abdul Munim, Rianto Setiabudy Subject(s):