T Nation

Possible Vitamin D Overdose?

Around christmas I wrote something in the “D is for Doping” thread about how I might have overdosed on vitamin D. I promised to write again to update everyone interested on my condition. I held off on that for so long that the thread is no closed, so I’m opening this one.

After “D is for doping” was published I started supplementing with 4000IUs of D3 for a period of three months. That’s when I started having heart palpitations, hypertension, and even a dizzy spell that made me check in with the local ER.

At first didn’t see the possible connection. Then I started going through changes I had done to my diet over the last few months. The only thing that stood out as significant was the doses of D3.

I quit immediatly and made an appointment with my doctor. The waiting list was three weeks, so in the meantime the symptoms got a little milder. Still, my BP was too high, and the palpitations were much to hard and frequent for my liking. I didn’t really get any good answers from the doc, but he told me it was probably smart to lay off the D.

A couple of weeka later I got an appointment with a cardio specialist who trains at our gym instead. By that time the symptoms were more or less gone, but he wanted to give me a 24 hour EKG check. I didn’t have one single incident for the whole period. In fact everything was perfect. I mentioned my theory about the D3 doses, and he asked me why I took what to him seemed like insane doses.
I told him about what I had read, and specifically pointed him to VitaminDcouncil.org, which I believe was among the references in “D is for Doping”. The topic seemed to catch his interest. He said he’d read up on this, and do a background check on the site. It’s been months since that conversation, so I thought he had forgotten about it, but actually he had spent quite a lot of time reading studies.

I think neither him nor me would presume to know for certain that I had overdose symptoms, but his opinion after doing his research was that the people behind vitamindcouncil.org are very strong believers in what they proclaim, but according to him the studies they base their opinions on have serious flaws. His major concern was that they weren’t done in controled environments with control groups.
There are also other studies that contradict their results, but apparently they prefer not to mention those.

His conclusion was that we still know too little about what the perfect doses and blood levels are, and that it would be safer in the meantime to stick to the official recommendations.

I’m not telling anyone what to do here. I just wanted to share my story, and ask you please to be careful if you start experiencing strange cardiac events on higher than officially recommended doses of D.

Good luck!

why not get your vitamin d levels checked with blood work during this time?

I asked for it. When the blood work came back it wasn’t among the test results. Some sort of screw up I guess. My doc seems a bit distracted. I think he’s stressed by too many patients. The waiting room is always crowded and he’s always late. By the time I got the results I was better, so I didn’t get in line for another appointment.

Either way, one of the cardio specialist’s points was that no one really knows for sure what optimal blood levels are anyway.

[quote]captaincalvert wrote:
I asked for it. When the blood work came back it wasn’t among the test results. Some sort of screw up I guess. My doc seems a bit distracted. I think he’s stressed by too many patients. The waiting room is always crowded and he’s always late. By the time I got the results I was better, so I didn’t get in line for another appointment.

Either way, one of the cardio specialist’s points was that no one really knows for sure what optimal blood levels are anyway.[/quote]

Take liquid vitamin D, not caps. Buy quality too.

I take 5000 IU per day, feel great.

[quote]Take liquid vitamin D, not caps. Buy quality too.

I take 5000 IU per day, feel great. [/quote]

I doubt there was anything wrong with the quality. My symptoms were consistent with early stages of poisoning from taking too much. A liquid would probably just make me absorb even more. There is always the possibility that my levels are naturally high, that I absorb D better than average, or that I am somehow hypersensitive. If you feel fine, you probably are. I’m just trying to get across that some people might have a genetic make-up that doesn’t go well with high doses.

Interesting info, thanks for sharing.

Could you also include height, weight info?

I was around 200 pounds. I’m 180 centimeters tall. I believe that’s about 5 foot 9, right?

So what were you Vitamin D levels after you got retested

you had better stay out of the sun then… :slight_smile:

your location is blank, what country or state or Provence are you in. Do you get a lot of sun exposure? if you do you shouldn’t be supplementing…but you probably know that.