I had this for months. Then it went away.

Then I had surgery December 26th and it came back. Every single morning like clockwork. Between 5am and 6am I wake up pounding heart rate and a very unusual feeling all over my body. My heart rate would be in the 160s.

I started taking Benadryl but it caused a reboynd affect and increased my heart rate once it wore off.

Now I take zyrtec. I still wake up in the morning feeling very weird. My heart rate pounds hard but nowhere near as fast.

I got a new doctor and told him about all of my stuff that started in 2018. He went back over my records. Showed my kidneys are wasting potassium:(
Have you had low potassium at all?