Please note that we are not doctors, just people with diabetes.
Wounds - as far as I am aware - are treated exactly the same if you are diabetic or non-diabetic.
Reduced ability to heal can be a side effect of poor blood glucose control which impairs the immune system.
So the best approach for a diabetic - especially with problems such as ulcers to the feet and legs - is to improve blood glucose control.
This may include eating less carbohydrates and eating less food generally if the diabetic is over weight.
This is a UK group, so we cannot really give any advice about drugs available in another country.
We certainly can't give advice about treating wounds - this should be for your local doctor or nurse.
Sorry I cannot be more help.
LGC