That;s basically where I ended up with medications. The palps came and went on their own with no rhyme or reason. The meds, if anything, made them worse for me at times so I stopped them and just won't bother with them anymore.
I recently went to the docs because I was having GI issues and a PPI was suggested but I've learned enough about me over the years and told the doc I didn't want to go that route. I said I wanted to make sure there wasn't anything bad going on like gallstones or something else and if that's the case, I'd rather wait it out. The tests came back fine and a few weeks later my GI started to get better on its own. Now if I started taking the PPI would I attribute the improvement to the meds? probably. I'd also be stuck on the darn thing because coming off PPIs, like any medication, has a rebound effect.
My advise is to not make any medication changes without involving your doctor. Coming off any medication will have a rebound effect that may or may not be problematic.
For my situation and for the type of palps I was getting I tried all sorts of meds and I came to the conclusion, for me, that there aren't any medications that could help, or, the side effects were as much a problem as the condition I was trying to make better.
I don't know why if your doctor is on vacation he doesn't have another doctor taking his calls.. I wouldn't want to wait until he came back if you are having bad side effects. The nurse should have asked if you wanted to see another doctor.
Let me precede my answer by saying that anything is possible, ok? If you're taking half of a 25mg pill of Metoprolol Succinate (the time release version of Metoprolol), you are taking 12mg per day, which is a teeny, tiny dose. By contrast, I'm on150mg per day, and I don't feel a thing from it. Some people can be on a dose as high as 400mg. per day. So I would try and put your dose level in perspective. Could 12mg per day affect you adversely...it's possible. But I'd look elsewhere to determine why you're not feeling of to snuff before blaming it on that medication.
Also... I could be incorrect on this, but I believe the Metoprolol Succinate pill should not be cut or crushed. Doing so modifies its time release properties. This can be done safely with Metoprolol Tartrate.