Effects of Diabetic Tablets

Patient: Hello..my dad’s fasting sugar level was 144 after taking neodipar 500mg twice daily and20 -40 mins of walk in the early morning….before when he was not taking neodipar, he was taking plendium (herbal)medicine, his hbA1c was 8.1 which later become 6.9 by this plendium herbal medicine..now i have taken my doc to another doc who has suggested to give that neodipar (metformin hcl)500 mg twice daily…now i have checked his fasting sugar level which was as i told u 144…please tell me what should i do….i am very very much worried about my dad…i love him alot…what should i do…….pls pls help me out.my dad is around 64 years old.