My father aged 60 years having diabetes since last 20 years Presently taking ozomet pg 2 in morning before breakfast and zukonorm 50/500 before lunch and istamet 100/1000 at night but his sugar increased in winter upto 300 post meal 300 sugar is on the higher side Mostly his sugars are on the higher side sometime it is ok This time in winter his sugars increased Are these medicines fine or should any change be done ? Otherwise he got full body check up done it is fine no protein in urine and everything is fine Should he consult another dr or is it ok or any dose adjustment is required? Bp is under control he also has hypertension since last 10 years