The outcome indicators were used to evaluate rutin’s effects on inflammatory bowel disease including body weight (7 articles), colon length (4), disease activity index (DAI) (3 articles), IL-6 (2 articles), IL-10 (2 articles), IL-1β (2 articles), TNF-α in (7 articles), MPO activity (4 articles), MDA (2 articles), mRNA iNOS (3 articles), GSH (4 articles), SOD (3 articles), and CAT (3 articles). Here, NOS2 is linked to inflammatory bowel disease.