Heart Rhythm Community
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941118 tn?1312285526

Low HR on Toprol

I am on Toprol for chronic pvcs.  It causes my HR to go as low as 46 while resting.  When I first started taking it 2 weeks ago it lowered my BP to under 105/60.  Now my BP is normal but my HR is still so low.  I am only taking 6.5 mg twice per day - thankfully it is working on the pvcs.  I don't feel light headed or dizzy in any way - I am just worried about the low resting.  The highest it ever seems to get is 55 -57 during the day.  Does anyone have any suggestions?  Does kolonopin lower HR.  I have some in my drawer, but don't use it too much, but sometimes I need it but I am afraid it will lower the HR even more.

Thank you.  Debbie
10 Responses
967168 tn?1477588089
I spent 7 hours in the ER last week after my first dose - 25mg  they couldn't keep my bp above 70/40 (I think my hr was 41) and finally sent me home after so long and tons of tests.  They said it's a common side effect of the meds - thats what they told me in the er :(

They told me not to take it again until I talked to my cardiologist.  Have you talked to yours to see what you can do?
I've always had BP on the lower side so I kind of expected some side effects, but not that drastic. Before I took it bp was 118/76 - within an hour dropped to 70/40 but the er dr said it shouldn't have happened so fast with the meds - so maybe something else was going on also (like pvc's aren't enough).

Hope you find an answer, I'm watching in hopes someone else knows.
Avatar universal
I just started taking metoprolol 50mg/twice a day for SVT ( I am 6'2, 200lb male, hence the higer dose).  I am not sure how different metoprolol is from toprol, but I am also noticing some very annoying (albeit less serious) side effects.  The most obvious is insomnia/very odd dreams.  It tends to keep me up at night.  Otherwise, my HB has lowered by a modest 5-10 BPM.  
967168 tn?1477588089
Toprol is brand name - Metoprolol is generic name
690060 tn?1247845341
perhaps you need an even lower dose. The Toprol is doing what it was made to do, just maybe too much of a good thing.

And btw, metoprolol succinate is Toprol, which is extended release -  and metoprolol tartrate is Lopressor, which is the normal release version.
690060 tn?1247845341
maybe you just naturally (genetically) have more of the enzyme that converts the m. succinate to the active molecule.

or maybe there was an interaction with some other drug, or with some food
967168 tn?1477588089
Lowering bp? wonder why I was given it when I have normal - low bp to begin with - she said (EP) she put me on it for pvc's which did nothing but make them worse.  

My normal bp has been 118/76 & HR 70-75 in the past 6 mths.

That's what I didn't understand I've never had a bp reading over 130/90, so no clue and my script was for Toprol - I got it from my local CVS and saw the generic and asked them about it - said it's the same thing.

I don't even take OTC meds; food maybe but I doubt it, my bp's dropped back & forth since last week so I bet there's something else going on.
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