@jadillow that doesn't mean the drug is not causing the bradycardia. Maybe it isn't but it is surely a top reason. Our bodies change - weight loss, age. We take other medications or formulations of drugs may change slightly.. Because you took the drug for years doesn't mean it isn't causing the problem now. There are a host of medications you can take for hypertension if lisinopril is causing the problem. The fact your doctor has not discussed drug side effects is appalling to me. But patients also tend to not want to ask too many questions, I find. To not ask questions is too often to do so at your peril. I cannot diagnose you but I have little doubt as to the cause of your problem. My advice is to find a cardiologist who will consider the drug connection. I will not be commenting further but leave you with this link FYI> Interesting case study from Emory re: bradycardia in woman taking your medications. Case Presentation:A 42‐year‐old white woman with a past medical history of hypertension was referred to cardiology for symptomatic bradyarrhythmia. https://www.shmabstracts.com/abstract/a-case-of-symptomatic-bradycardia-from-amlodipine/