Beta Blocker Withdrawal and Epsisodes of Sinus Tach
Hello, everyone --
My first post, but I've been reading many other posts to locate some answers before I posted. I found some general similar stories to mine, but nothing particularly close.
I've been on Toprol XL (selective beta blocker) for the past 2 years. I was taking only 12.5 mg (1/2 of the lowest dose tablet) for on occasional PVC and skipped beat. The prescribing doctor said that ought to be sufficient to give me some relief.
For the first six months to a year, it was great. I think it definitely helped me. But over time, I started to get anxiety after taking it. I'd also get period of palpitations between doses.
Eventually, my doctor said to just stop taking the Toprol, and because of the "small" dose - just stopping it would be fine.
That advice was several months ago. But within 3 days of stopping, I had severe palpitations, pounding chest, and heart rate in the 140s. I went to the Emergency Room and got rehydrated and sent home since EKG and blood work was normal. My heart rate eventually came back to normal, which for me is 55 to 65 at rest.
Repeat that above incident several more times, including just yesterday.
I've tapered down from 12.5 to about 6 mg. and took that 6 mg. dose for 2 weeks. I've now been off Toprol for 8 or so days and have periods of rapid heart rate when I move or do simple tasks. And these episode are truly sporadic - there are times when I'm fine, times when I'm worn out and experiencing issues. I also feel like I get "squirts" of adrenaline or something from my endocrine system at times. I feel these mild "shocks" or waves that come over my abdomen and chest - like my adrenal system gets ready to do something, but sometimes doesn't.
There is also anxiety when this happens. Either from the anticipation I have expecting an event to happen or from the withdrawal from the Toprol. I'm not sure which came first: The chicken or the egg. In my case, which causes what? I've read that some people get anxiety coming off Toprol.
So, some details.
I'm a 41 year old male. Proper weight, proper diet, nothing interesting in blood work. (Thyroid is fine, CBC is fine, EKG is fine.) I gave up coffee and concentrated sugars months ago. I eat a nutritionally complete diet, and am mindful of the foods I select. I'm a Whole Food shopper, if you know what that store is.
I'm questioning if 1 to 2 years of Toprol use can have such a profound withdrawal effect? I'm also wondering if Toprol causes anxiety during use and withdrawal?
Many thanks to everyone who had a read and offers some casual input.