LC–MS/MS determination and urinary excretion study of seven alkaloids in healthy Chinese volunteers after oral administration of Shuanghua Baihe tablets
Keywords: SBT, Shuanghua Baihe tablets; IS, internal standard; LLOQ, lower limit of quantification; LQC, low QC; MQC, medium QC; HQC, high QC; MRM, multiple reaction monitoring; RE, relative errorBerberine; Berberrubine; LC–MS/MS; Magnoflorine; Shuanghua Baihe tabl