Noni seed extract is used topically to address inflammatory skin conditions and joint pain associated with arthritis and rheumatism. Although studies are limited, there is evidence to suggest that compounds in the oil may possess anti-inflammatory properties.
Noni fruit, which is multi-seeded, is a source of potassium and vitamins A and C, according to the “Physicians’ Desk Reference for Herbal Medicines.” The herb also contains numerous compounds that produce medicinal effects, such as scopoletin, asperuloside, rutin, linoleic acid and various terpenoids, amino acids, alkaloids, anthraquinones and volatile oils.
Collectively, the active agents in noni are antiviral, antibacterial, antioxidant, analgesic, anti-tumor and hypotensive, which means the herb may decrease blood pressure. Noni is under investigation as a potential treatment for breast and prostate cancer, according to the National Center for Complementary and Alternative Medicine. Noni seed oil is anti-inflammatory and effectively counters acne and other inflammatory skin conditions, such as eczema.