Herein. the effect of silymarin pretreatment on the pharmacokinetics of simvastatin in rats was evaluated. To ensure the accuracy of the results. a rapid and sensitive UPLC−MS/MS method was established for simultaneous quantification of simvastatin (SV) and its active metabolite simvastatin acid (SVA). https://macorners.shop/product-category/clear-tote-bag/