Memantine, an amantadine derivative with some dopaminergic effects, has been proposed as an antiparkinson agent and has may be used to treat moderate to severe Alzheimer's disease. It acts on the glutamatergic system by blocking NMDA receptors.

Dehydroandrographolide is a natural compound extracted from herbal medicine Andrographis paniculata (Burm f) Nees.

Colesevelam Hydrochloride is a bile acid sequestrant with a higher affinity for glycocholic acid in vitro. Colesevelam Hydrochloride inhibits bile acid reabsorption, leading to increased bile acid synthesis and reduces cholesterol levels in patients.