This case study describes Mrs. CS, a 57-year-old grandmother with a 3-year history of Type 2 Diabetes Mellitus (T2DM), who came from a diabetic family and presented with blurry vision and fatigue. She was also diagnosed as hypertensive last year. She reported discontinuing all prescribed medications for five months, relying instead on decoctions of the Philippine serpentina plant (Andrographis paniculata) and the insulin plant (Chamaecostus cuspidatus) for blood pressure and glycemic control due to budget constraints. An HbA1c test revealed hyperglycemia (7.5%). This case highlights the critical public health challenge of medication non-adherence in T2DM patients, particularly those influenced by traditional herbal remedies. It emphasizes the significant risks of relying on unproven therapies, the resulting poor glycemic control, and the potential for severe microvascular complications like diabetic retinopathy. The report emphasizes the urgent need for comprehensive patient and family education regarding evidence-based T2DM management, the dangers of unsupervised medication cessation, and the importance of professional medical consultation to integrate any complementary therapies safely.