Hi, I had gone through your query and understood your concerns. Sir, Hypertension and diabetes are most common combination of diseases. Taking a hypertensive pill has no side effects. Cholesterol can be reduced by low fat diet and regular exercises. Coming to metformin, there is a rare possibility of gastric motility problems which may sometimes cause diarrhoea when started initially in very few individuals.. If that din t occur initially, then you can have it to control sugar levels which is very effective in doing so.. Hope this guides you. For any other queries you can write to us. we will be happy to help you. Thank you. Dr Phanindra Dulipala Diabetologist.