Introduction: Diabetes mellitus is a metabolic disorder affecting human population since many centuries ago. To contend this disorder, effective alternative use of non-pharmacological approaches, particularly natural herbal plants, has become a subject of interest since the last decade. Aim: To evaluate the safety and effectiveness of Lannea coromandelica in the management of diabetes mellitus. Materials and Methods: A systematic review on randomised controlled trials will be carried out. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines will be followed. The search strategies will be conducted in PubMed/MEDLINE, J-Gate, EMBASE, COCHRANE database and Google Scholar. The search period will be included from 1968 to December 2020. The screening process will be initiated by two authors for title and abstract followed by four authors for full-text articles. The extraction will be performed by using the following characteristics-Study design, Animal model, Intervention of interest. Conclusion: This current review will provide evidence based on the available literature either to accept or reject the hypothesis that efficacy of Lannea coromandelica herbal plant may be beneficial for controlling glucose levels in diabetic model.