My Mother Has Been On Hydralazine For 4 Months And

My Mother has been on Hydralazine for 4 months and has had wheezing and shortness of breath when exerting any energy. no swelling, no temperature, no pain, heart Dr. said her heart is great per EKG. All bloodwork was good in November. They took her off of Norvasc and Indapamide in September because they said it comprimized her kidneys. I believe the wheezing and heavy breathing is caused by this drug because that is when these symptoms began. She has gotten very weak on this drug. Home health care nor Dr. could figure out why she had wheezing when she sounded good when listening and oxygen leave was good. What say you?