Ganluyin improves dextran sulfate sodium (DSS)-induced ulcerative colitis by enhancing the expression of tight junction proteins, such as Occludin, Claudin-1, and ZO-1, while inhibiting the enteric-origin toll-like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) pathway [10]. Here, TLR4 is linked to ulcerative colitis.