“…Betulin, [lup-20(29)-ene-3β,28-diol], is a pentacyclic triterpene that has drawn scientific interest due to its multiple biologic activities, mainly anti-inflammatory and antitumor ( Alakurtti et al, 2006 ); in spite of this promising pharmacological profile, its clinical use is severely restricted by its very poor bioavailability and bio-distribution in direct correlation to its low water solubility ( Drąg-Zalesińska et al, 2017 ). In an effort to overcome this drawback, several nanoformulations with betulin have been developed such as cyclodextrin complexes ( Soica C. et al, 2012 ), polymer-liposome nano-complexes ( Cho et al, 2007 ), nanoemulsions ( Dehelean et al, 2013 ), carbon nanotubes ( Saudagar and Dubey, 2014 ), nanostructured carbon sorbent ( Lavrenov et al, 2015 ); all studies reported an improved pharmacokinetic profile of the active compound therefore an increased bioavailability.…”