Isoescin IB, isolated from horse chestnut tree seeds, is an isomer of Escin IB. Isoescin IB and Escin IB are the chief active ingredients in escin[1].
[1]. Wu XJ, et al. Comparative pharmacokinetics and the bioavailability of escin Ib and isoescin Ib following the administration of escin, pure escin Ib and isoescin Ib in rats.J Ethnopharmacol. 2014 Feb 3;151(2):839-45.
















