N tau-methylhistamine is one of the histamine metabolites. N tau-methylhistamine in plasma and urine is a good parameter for histamine release and the determination of this histamine metabolite is generally less hampered by possible artifacts (due to basophil disrupture a very short half-life time or bacterial production) than determinations of histamine itself.

Glycosmisic acid is a natural product from Nauclea officinalis.

Isogarcinol (Cambogin) is a potent AChE and BChE inhibitor, with IC50 values of 1.13 and 8.30 μM, respectively. Isogarcinol also shows leishmanicidal activity, with an IC50 of 0.33 μM against L. donovani.