Hi. You don’t say why you are on Losartan, but out of the gate, that’s more targeted to regulating blood pressure than abnormal heart rates. And although metoprolol is used for BP as well, it is often used by EPs as a medication to alleviate or suppress PVCs and PACs or atrial flutter.

Were you having issues with metoprolol? I for one, could not take it. It made me a complete zombie… so bad I could barely stand up or speak or think! I had extreme vertigo. And they kept increasing the dose despite the side effects because it wasn’t working to regulate my multiple arrhythmias. I was taken off Losartan because between the two, my blood pressure was too low.

I was then switched to Diltiazem. That seemed to help a little bit more, and regulated my blood pressure. But it did not work to help keep Afib from occurring and I ended up in ER with HR of 170, afib, and PVC/PACs.
I was electrocardioverted and even that didn’t work. They put me on a continuous drip of diltiazem and that finally did the trick.

Needless to say, and for a variety of reasons, like being told I was over reacting to constant PVC/PAC activity, and not sleeping for three years because of the symptoms, I changed my EP and cardiac clinic.

Best thing I ever did. My arrhythmias are now managed by Flecainide and Diltiazem twice daily.

Hope things go smoothly for you and you are happy with the whatever results they are aiming to achieve via the Losartan.