Taking Calcium without D supplementation

Posted by busymomof7 @busymomof7, Oct 21, 2025

I have been told to take my calcium WITHOUT vitamin D. I have unusually high levels of vitamin D in spite of stopping D supplements in 2022. My understanding was that you have to take D with the Calcium in order to absorb it but my doctor said my high levels of D already in my system are all that is needed. Does anyone have experience with taking calcium without the vitamin D component and if so, what kind of calcium did you take? Also, does anyone have any insight as to what might be causing the high levels of D? I do not take any supplements currently other than a multivitamin and calcium with D. I do not eat anything that is rich in vitamin D so it is not coming from my diet-which is what my doctor said is causing my elevated levels. Thank you

Interested in more discussions like this? Go to the Osteoporosis & Bone Health Support Group.

Profile picture for busymomof7 @busymomof7

@laura1970 my most recent bloodwork read 88.6 and that is without taking any supplements. I read that it can cause fatigue and also the kidney stones as you stated. I struggle alot with fatigue and am trying to figure out if this is contributing to it.

Jump to this post

@busymomof7 I’ve done a bit of research, first thing I learned is that there are a few different vitamin D assays (tests) and they do not always measure the same thing. The general theme of the article I read was that a better assay for vitamin D is needed.

Second thing is from Wikipedia:

A mutation of the CYP24A1 gene can lead to a reduction in the degradation of vitamin D and thus to vitamin toxicity without high oral intake

Next:
Levels of 150 or greater are universally considered toxic. Ranges of 80-150 are debated as to their likelihood of adverse effects

The most worrisome effect of course is hypercalcemia, or too much blood calcium. The worst outcome of hypercalcemia is heart related as proper heart regulation, in particular heart rhythm, requires a precise blood calcium level. Other effects can include nausea, weakness, frequent urination, kidney damage.

It seems to me (I’m no expert, just researching this instant) that you should be on the lookout for these symptoms and if they occur another vit d level and calcium are called for.

Talk to your doctor about the need to limit vitamin D and calcium in your diet.

Consider a quick visit to a specialist if your vitamin D level rise. Perhaps they say nothing to be done, it’s great your vit D level is so good. No harm done.

Also if your vitamin d level continues to rise could consider genetic testing. I’m not sure how it would benefit you, but it might be helpful to your relatives. I think it might be wise to have your children’s and siblings vitamin D levels checked.

There is so much research and emphasis placed on low vitamin D, it’s unusual to talk about intrinsic high vitamin D.

Perhaps I am being an alarmist. In these types of situations, I feel it’s better to be safe than sorry.

REPLY
Profile picture for busymomof7 @busymomof7

@laura1970 my most recent bloodwork read 88.6 and that is without taking any supplements. I read that it can cause fatigue and also the kidney stones as you stated. I struggle alot with fatigue and am trying to figure out if this is contributing to it.

Jump to this post

@busymomof7 I found this article. Note it is from 2014 and much research has been done since that time. As an aside it lists a few conditions that cause high vitamin D levels such as various granulomatous diseases (sarcoidosis m tuberculosis), lymphoma, MEN (you can google this, it is a rare disease causing tumors in endocrine glands) and a genetic mutation. The real question I can’t find an answer to is does a vitamin D level of 88 constitute hypervitaminosis. Most of the literature I read states that when high vitamin D levels cause elevated blood calcium fatigue is certainly one of the many symptoms. But I suspect your calcium is normal, or your doctor would be much more concerned.

This article is the first I found stating that elevated vitamin D levels alone can be associated with fatigue. So it is a possibility. So many things cause fatigue. It is a vague symptom. And the possibility always remains that you have more than one process causing your fatigue.

Sorry I couldn’t be of more definitive assistance. The article is a pdf file. I don’t know how to upload it. If you want to read it, go to google scholar. Search:
Article title: Hypervitaminosis D and systematic manifestations: a comprehensive review
Journal: JIMSA
Authors: Gupta, et al
October - December 2014 volume 27 no 4

REPLY
Profile picture for grrranny @grrranny

I want to take vitamin D because my levels are very low, but it's such a huge capsule I can hardly swallow it. Are there any smaller capsules that you'd recommend?
I have trouble swallowing tablets.

Jump to this post

@grrranny
don't know what brand you are taking, but most are very small capsules. the ones I am currently taking are by NOW.

REPLY
Profile picture for busymomof7 @busymomof7

@bswpb - My doctor says my surplus must be from my diet except I do not eat Vitamin D rich foods. I am just concerned as to why my D is so high but my doctor is not responding to that concern.

Jump to this post

@buhow high is it? Above 100ng/ML is not good, can be toxic.

REPLY
Profile picture for ekorre @ekorre

@buhow high is it? Above 100ng/ML is not good, can be toxic.

Jump to this post

@ekorre
Yes. May be was. I was over prescribed I believe. Now stopped that and way down. High D caused me some other problems. It will be interesting to see what happens next.

REPLY
Profile picture for laura1970 @laura1970

@busymomof7 I found this article. Note it is from 2014 and much research has been done since that time. As an aside it lists a few conditions that cause high vitamin D levels such as various granulomatous diseases (sarcoidosis m tuberculosis), lymphoma, MEN (you can google this, it is a rare disease causing tumors in endocrine glands) and a genetic mutation. The real question I can’t find an answer to is does a vitamin D level of 88 constitute hypervitaminosis. Most of the literature I read states that when high vitamin D levels cause elevated blood calcium fatigue is certainly one of the many symptoms. But I suspect your calcium is normal, or your doctor would be much more concerned.

This article is the first I found stating that elevated vitamin D levels alone can be associated with fatigue. So it is a possibility. So many things cause fatigue. It is a vague symptom. And the possibility always remains that you have more than one process causing your fatigue.

Sorry I couldn’t be of more definitive assistance. The article is a pdf file. I don’t know how to upload it. If you want to read it, go to google scholar. Search:
Article title: Hypervitaminosis D and systematic manifestations: a comprehensive review
Journal: JIMSA
Authors: Gupta, et al
October - December 2014 volume 27 no 4

Jump to this post

@laura1970 thank you for all of this information - I appreciate it. I am going to continue to research and will let you know if I find anything of interest beyond what you have offered me here. Thank you again!

REPLY
Profile picture for busymomof7 @busymomof7

@laura1970 thank you for all of this information - I appreciate it. I am going to continue to research and will let you know if I find anything of interest beyond what you have offered me here. Thank you again!

Jump to this post

@busymomof7 great, there’s got to be a more definitive answer, I just couldn’t locate it. Please post it when you find something. I appreciate it

REPLY

Interestingly, Amazon often shows pictures of ingredients and the amounts which can be helpful…also, who says you have to take the full ‘’recommended dosages’’ ? The dosages may not fit a 100 pound woman…we can be proactive and patiently research what works best for us as individuals….like everything else in health matters, a positive outlook is ‘good medicine’.

REPLY
Please sign in or register to post a reply.