[paulirwin]

Thank you for your article. I also had alarming palpitations while on Vitamin D 5000IU, and did not make the connection until months later when I slacked off with taking it and they went away. Started taking them again and the palpitations came back. Went through the full battery of heart tests and everything said I was fine. I posted on here a few months back on another post about Vitamin D, explaining my (admittedly anecdotal) situation, and some commenters seemed not to believe me. Happy to hear that I'm not alone.

[Guest19023892]

Come to think of it, I've had some weird palpitations the last couple of years that have given me a bit of a scare too. I think I started taking Vitamin D supplements around that time (after I had my levels checked). The palpitations seem to happen on and off, and I've also been on the supplements on and off, but I haven't paid attention to if the times match up. I do know I haven't taken the supplements the past few months and it seems the palpitations haven't occurred in that time. I'll probably take the supplements again in the winter, so I'll need to see if the issue returns, and if so, whether not taking them makes it stop again.

[blaser-waffle]

Huh. I'll add some more anec-data to this thread: both my mom and myself have had similar issues.

My folks live in WA near Seattle and, while summers are pretty nice, most of the year is crazy dark and gray, necessitating some Vit D supplementation. My mom was pretty diligent about that and noticed heart palpitation on a few occasions, but no actual heart issues.

I live further north and supplement for the same reasons, and have even gone to the hospital thinking I was having a heart attack -- but all the tests came back fine. Those heart issues were after a long period of supplementation + aggressive workouts. If anything, my heart health was probably better then than most times; doctors attributed the issues to stress.

[paulirwin]

Sorry to hear that. I hope this helps you, as I know how scary and frustrating that is. How many IUs were you taking? I seem to be fine on <= 1000IU taken periodically, but 5000IU daily was too much for me.

[Guest19023892]

I was taking 2000IU daily.

For more details, I'd usually take it late morning with breakfast. I'm a normal weight (155lbs), exercise, eat healthy, low stress, in my 30s, good blood pressure, don't drink coffee. I'd notice the heart issues usually in the evening. Sometimes they would occur almost daily for a week, and then they'd go away for a couple of weeks. Then I'd experience them again one day, and not for another few days. They would occur for about a few seconds or a minute when I was at rest and not doing anything active. It's hard to describe the feeling but it was kind of like a muscle spasm occurring in what I thought my was heart. Or, like some strange beating/squeezing sensation that would occur once, then again 5 seconds later, then a couple of seconds after, then that was it. Or it might return after a few minutes and happen again.

It was an intense and serious enough feeling that it would make me pause whatever I was doing. It would make me think that one of these times it would be a bit worse, I'd end up collapsing, and that would be the end. I'd usually do a bit of cardio for a few minutes because like I said it only seemed to happen when I was at a resting heart rate.

I should probably get my heart checked because there's a good chance the connection with the vitamin D supplements is just a coincidence. Nonetheless, I'll pay attention to see if there seems to be a relation between the two, because although it's unlikely, stranger things have happened.

[BenjiWiebe]

Interesting. I had the reverse problem. I had lots of random muscle twitches and fatigue. Got my vitamin d levels tested, and they were extremely low (don't remember the exact number). I'm now on vitamin D and the symptoms went away.