18β-Glycyrrhetyl-3-O-sulfate (Glycyrrhetic acid 3-O-(hydrogen sulfate)), a major metabolite of Glycyrrhetinic acid (GA), serves as a potent inhibitor of type 2 11β-hydroxysteroid dehydrogenase (11β-HSD2) with an IC 50 value of 0.10 µM in rat kidney microsome assays. This compound acts as a substrate for organic anion transporters (OAT) 1 and OAT3. It exhibits anti-inflammatory properties and holds potential for research into pseudohyperaldosteronism [1] [2].