Licoricone exhibits anti-helicobacter pylori activity against the CLAR and AMOX-resistant strain as well as four CLAR (AMOX)-sensitive strains.

N,N'-Diacetyl-L-cystine is the disulphide dimer of N-acetylcysteine with immunomodulating properties.

Ainsliadimer A, a sesquiterpene lactone dimer from Ainsliaea macrocephala, has antitumour activity and induces cell death in various cancer cells.