Guluronic acid (G2013) is an orally active oxidative stress regulator and anti-inflammatory agent that exerts pharmacological effects by down-regulating various pro-inflammatory and oxidative stress-related genes (such as TLR4, NF-kappaB, iNOS, etc.) and inhibiting the activities of COX-2, MMPs and VEGF. Low-dose Guluronic acid up-regulates the expression of immunoregulatory genes SHIP1 and SOCS1, thereby effectively inhibiting cancer-related inflammation, tumor angiogenesis, cell adhesion and metastasis, while reducing the accumulation of immunosuppressive cells. Guluronic acid significantly prolongs the survival time of tumor-bearing hosts within a concentration range without direct cytotoxicity, demonstrating favorable safety. Guluronic acid has involved in the research of multiple sclerosis, ankylosing spondylitis, breast cancer and other inflammatory diseases[1][2][3][4].