Phellodendrine has anti-nephritic activity, may be due to its ability to inhibit the proliferation or the migration of macrophages and cytotoxic T lymphocytes in the glomeruli.

Laurotetanine ((+)-Laurotetanine) is an potent and orally active isoquinoline alkaloid and could be extracted from the roots of Litsea cubeba (Lour.) Pers. Laurotetanine exerts an anti-asthmatic effect by inhibition of IgE, histamine, and inflammatory reactions via down-regulating MUC5AC and NF-κB signaling pathways.

6-Hydroxytropinone is a natural product for research related to life sciences.