I am writing for my father. He takes Lisinopril, atenol, hydrochl...

I am writing for my father. He takes Lisinopril, atenol, hydrochlorothiazide, and norvasc -- all for high blood pressure which he has had (genetic) since he was 65. Since he has added the lisinorpil, he has been having problems lifting his feet. He can stumble very easily and now must use a walking cane. He is 87, active, and keeps up a 40 acre farm but is having trouble now because he is dizzy at times and has trouble lifting up his feet. His general practitioner and other BP specialist have told him it is not the lisinopril but when he doesn't take it the symptoms lessen considerably. He only takes blood pressure medication and nothing else. Has anyone else experienced having trouble lifitng their feet while taking lisinopril?