You can't improve the pumping capacity of heart.
Weight gain can be due to water retention as well as insulin itself.
Your doctor is right in advising METFORMIN
as this not only suppresses hepatic glucose production but also increases peripheral glucose uptake by increasing insulin sensitivity.It is the only antidiabetic
drug that has been conclusively shown to prevent the cardiovascular complications of diabetes
. It helps reduce LDL cholesterol
levels, and is not associated with weight gain.
Your problem of diarrhea and nausea can be tackled by taking small dose of 250 mg twice daily and then gradually increasing the dose.
Discuss with your doctor regarding this.