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What Causes The Feeling Of Passing Out After Taking Losartan Potassium?

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Posted on Tue, 19 Mar 2019
Question: I STARTED ON LOSARTAN POTASSIUM 50MG ABOUT 5 DAYS AGO. WAS ON NORVASC BUT IT WASN'T WORKING. I FEEL LIKE I'M GOING TO PASS OUT , BUT HAVN'T. ALSO FEEL LIKE MY GLASSES ARE THE WRONG PRESCRIPTION ALL OF THE SUDDEN. IS THIS NORMAL TILL MY BODY GETS USED TO THIS DRUG?
doctor
Answered by Dr. Ilir Sharka (21 minutes later)
Brief Answer:
I would recommend as follows...

Detailed Answer:

Hello!

The fainting feeling could be related to low blood pressure.

Have you measured your blood pressure today? If your blood pressure is low, I would recommend reducing the dose to 25mg daily or even stop taking losartan as long as your blood pressure values are low.

Regarding the troubles with vision, they are not a known adverse effect of losartan.

So, in my opinion, if your blood pressure values are normal, I would recommend being patient and see if these symptoms subside in the next days.

Hope you will find this answer helpful!

Let me know if I can assist you further.

Kind regards.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Ilir Sharka (19 minutes later)
Dr. Iliri,
Thank you for responding so quickly. I take my BP every morning and it has been running 130's/80's. This morning in was 120/89. I took it several times over a 15 minute period sitting down. So by your answer, I can split the 50mg pill in half for tomorrows dose?
I see the doctor again in 3 weeks but will call his office if I still have this feeling of unwell.

XXXX
doctor
Answered by Dr. Ilir Sharka (18 minutes later)
Brief Answer:
I would recommend as follows...

Detailed Answer:

Hello again!

I would also recommend measuring your blood pressure values in standing up position after 5 minutes of standing.

If your blood pressure drops while standing up position compared to the sitting position, it could be indicative of orthostatic hypotension.

Regarding the changes in doses, I would recommend waiting a couple of days. If these complaints persist, I would recommend stopping losartan, until consulting with your doctor.

Hope you will find this answer helpful!

Wishing good health.

Regards,
Dr. Ilir Sharka, Cardiologist
Note: For further queries related to coronary artery disease and prevention, click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Ilir Sharka

Cardiologist

Practicing since :2001

Answered : 9541 Questions

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What Causes The Feeling Of Passing Out After Taking Losartan Potassium?

Brief Answer: I would recommend as follows... Detailed Answer: Hello! The fainting feeling could be related to low blood pressure. Have you measured your blood pressure today? If your blood pressure is low, I would recommend reducing the dose to 25mg daily or even stop taking losartan as long as your blood pressure values are low. Regarding the troubles with vision, they are not a known adverse effect of losartan. So, in my opinion, if your blood pressure values are normal, I would recommend being patient and see if these symptoms subside in the next days. Hope you will find this answer helpful! Let me know if I can assist you further. Kind regards.