ED problem for high blood pressure and epilepsy seizure person

Patient: Hi,my name is Himmat, i am 35 years single, i can’t get an erection to have sex or can’t keep an erection long enough to finish having sex, i have noticed the problem about year ago.i am high bp and i do take a treatment for that (Atakand 16mg) for about 3 years, moreover i suffer from epilepsy seizure and i take tagritol 200mg for more than 12 years.please advice.