Nomilin is a limonoid/triterpenoid found in citrus fruits that exhibits anti-parasitic, antiviral, anticancer, anti-metastatic, anti-angiogenic, anti-inflammatory, immunomodulatory, anti-obesity, anti-diabetic, and antiviral activities. Nomilin prevents growth of Aedes and suppresses replication of HIV-1 by inhibiting HIV-1 protease. In animal models, nomilin induces phase II enzymes by increasing expression of glutathione-S-transferase and NADPH:Quinone reductase. In animals fed high fat diets, nomilin activates GR5, increases glucose tolerance, and decreases body weight, glucose levels, and insulin levels. In vivo, nomilin increases white blood cell counts and antibody titers but suppresses delayed-type hypersensitivity reactions. In vitro, this compound inhibits cell proliferation, migration, invasion, and capillary tube formation and decreases levels of IL-1β, IL-6, TNF-α, VEGF, NO, and GM-CSF. Additionally, nomilin also inhibits aromatase and cellular proliferation in breast cancer cells.