Introduction: Diabetes mellitus is not just a disease, it dramatically affects people's lives, both physically and psychologically. It is like a permanent guest, never leaving its owner. It is promising to know that, it was detected that GABA can stimulate and multiply beta cells in islets of langerhans through activation of PI3K/Akt pathway and can also convert alpha cells to beta cells with long term use. Materials and Methods: 100 patients of type 1 diabetes followed in a private clinic for 1 year. They is on multiple insulin injections in the form of lantus and actrapid. Results: The results show a statistically significant difference in hba1c in patients before and after 6 months of treatment with GABA. Conclusion: GABA is considered as the best choice for adding to insulin for patients with type 1 diabetes decreasing insulin dose, decreasing incidence of diabetes complications.