Steviol glucuronide (SVG) was the major metabolite of steviol, the aglycone of steviol glycosides.
SVG was not a substrate of efflux transporters such as BCRP, MRP2, MATE1 and P-gp.
Among uptake transporters, OAT3 played a predominant role in the cellular uptake of SVG.
OTA3-mediated uptake of SVG was inhibited by quercetin, telmisartan, diclofenac, and mulberrin.
Inhibition of OAT3 activity by drugs and natural compounds may alter SVG's renal clearance.