The case involves a 70-year-old female with Type 2 Diabetes (T2D) who had been prescribed EquMet (vildagliptin/metformin) and had a stable HbA1c. In August 2022, she tested positive for real-time polymerase chain reaction (RT-PCR) without showing any symptoms. By November 2022, her HbA1c had increased to 7.4%, and a chest CT scan revealed a consolidation lesion in her left lower lung, suggesting post-inflammatory pathology of COVID-19. Imeglimin (Twemeeg) was added to her treatment regimen, and it proved effective, resulting in a 0.9% reduction in HbA1c over 4 months without any gastrointestinal adverse effects (GIAEs). The combined treatment of EquMet and Twymeeg was effective, and the interrelationship between T2D and COVID-19 will be followed up.