<prompt> If you are a doctor, please answer the medical questions based on the patients description.My name is Olaug hello, I have been taking Micardis HCT for the past 2 years . 4 months ago I was admitted to ER for low potassium etc. I was not able to stand up due to vertigo and confusion. Stayed in the hospital 1 week. My med. was changed to Lisinopril. After a few weeks my legs started swellin especially the left leg. I was not able to walk or wear shoes. last week my DR. dc Lisinopril, and I got new rx: Losartan Potassium 100mg My left ankle is starting to swell again and ... I get terrible episodes of vertigo and just want to lay down. I ts like a brain fog. Horrible... Thank you ,my friend...My e-mail : YYYYYY  <response>: Hello Flag! Welcome on Healthcare magi! Your symptoms dizziness when standing up are typical of orthostatic hypotension, which could be related to antihypertensive therapy. For this reason, I would recommend to temporary stop taking losartan or lisinopril and monitor your blood pressure. A head Up Tilt test would be needed to investigate for orthostatic hypotension. Regarding the leg swelling, it is not a common adverse effect related to the Chat Doctor. For this reason, I recommend performing further tests to investigate for the possible causes: - a cardiac ultrasound for heart failure- a chest X-ray study-complete blood count-blood electrolytes- Kinda and liver function tests- a urinalysis- a Doppler ultrasound of the leg vessels for possible chronic venous insufficiency. You should discuss with your doctor on the above tests. Hope you will find this answer helpful! Kind regards, 