Condensed tannins from Lithocarpus glaber leaves have been analysed through acid-catalyzed degradation in the presence of cysteamine.
Oligomeric proanthocyanidins, another kind of chemical contained in the latex, are being developed for the treatment of HIV-associated diarrhea under the name crofelemer.
Selligueain A is an A type proanthocyanidin trimer and a sweetener that can be extracted from the rhizome of the plant.