HI, thanks for using healthcare magic Normal erectile function depends on a number of different systems acting together: the blood supply and nervous supply to the penis, hormonal levels, normal central nervous system (brain and spinal cord). With a history of diabetes and hypertension, it is likely that there may be some damage to the blood supply which has resulted in the problem. There is some evidence that there may be a link the heart disease and control of risk factors such as your blood pressure, blood sugar, cholesterol , smoking and weight loss (if there is excess weight) is suggested. Treatment involves the use of medication such as cialis, if the present dose does not work for you , you can consider speaking to your doctor to adjust it. There are other types of medication in this family that you can try if it remains ineffective. I hope this helps