can be a complication in diabetics due to poor glycemic control.
i as such does not need medication as the condition will improve with good gycemic control.
you are already on a lot of medications and some of these can increase the level of sildenafil
in the blood.
i advise you to take the diabetic and anti hypertensive medications regularly.
despite a good glycemic control if this persists i would advise you to consult you physician regarding the same before taking the sildinafil.
please do not self medicate.
i hope i have answered your query.