OBJECTIVE:To evaluate the safety and tolerance of
magnesium isoglycyrrhizinate(MgIG)injection in Chinese healthy volunteers,and
provide safe and utility dosage scheme.METHODS:36healthy volunteers were randomly divided into4groups,each group administered respectively with single-dose
intravenous infusion of100,200,300mg of MgIG and mulˉti-dose intravenous infusion of200mg of MgIG,qd for7consecutive days.Clinical symptoms,vital signs,electrocardiograms,routine blood and urine tests,as well as hepatic and renal function were observed before and after IV infusion of MgIG.RESULTS:In single-dose IV infusion of MgIG groups,the vital signs and laboratory indices did not change in the subjects immediately after or at1h,8h,24h after administration,as compared with before,while in multi-dose constant intravenous infusion group,the vital signs and laboratory indices at4days and8days after administration were in the normal range,as compared with before.CONCLUSION:Tolerance of healthy subjects to MgIG is good,and daily dosage of100mg to200mg is recommended for clinical use.