Anyone been diagnosed with Vitamin D toxicity? What are the symptoms?

Posted by spacemonkey @spacemonkey, Dec 13, 2025

Anyone been diagnosed with Vitamin D toxicity? Symptoms?

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@spacemonkey, according to this article from Mayo Clinic:
- What is vitamin D toxicity? Should I be worried about taking supplements? https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/vitamin-d-toxicity/faq-20058108

"The main concern of vitamin D toxicity is a buildup of calcium in the blood. This is called hypercalcemia. Hypercalcemia can cause upset stomach and vomiting, weakness, and frequent urination. It also can lead to bone pain and kidney troubles such as kidney stones."

I see you posted your question in the Heart & Blood Health support group. Are you experiencing symptoms that lead you to think you might be experiencing from too much vitamin in the body? Have you been taking large doses of vitamin D?

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No, I have not been diagnosed with 'toxicity', but I do take Vitamin D3 daily. I take 2 softgel tablets of D3 2000IU (50mcg). I am 86 with high blood pressure, past heart attack, a couple of PCI's in the last 5 years, Pacemaker for about 13 years. I take other prescribed medications and last had Labs drawn about a week ago, with no mention of high D. Is there a specific blood test used to pinpoint toxicity? Thank you.

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Profile picture for moey2720 @moey2720

No, I have not been diagnosed with 'toxicity', but I do take Vitamin D3 daily. I take 2 softgel tablets of D3 2000IU (50mcg). I am 86 with high blood pressure, past heart attack, a couple of PCI's in the last 5 years, Pacemaker for about 13 years. I take other prescribed medications and last had Labs drawn about a week ago, with no mention of high D. Is there a specific blood test used to pinpoint toxicity? Thank you.

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@moey2720 I believe over 5,000 units but I'm not in the medical profession. But I've taken 5,000 units for over 10 years with no problems. But my advice is to ask a doctor that understands your particular health needs.

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Profile picture for sewing4life @sewing4life

@moey2720 I believe over 5,000 units but I'm not in the medical profession. But I've taken 5,000 units for over 10 years with no problems. But my advice is to ask a doctor that understands your particular health needs.

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@sewing4life Why are you taking it?

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Profile picture for moey2720 @moey2720

No, I have not been diagnosed with 'toxicity', but I do take Vitamin D3 daily. I take 2 softgel tablets of D3 2000IU (50mcg). I am 86 with high blood pressure, past heart attack, a couple of PCI's in the last 5 years, Pacemaker for about 13 years. I take other prescribed medications and last had Labs drawn about a week ago, with no mention of high D. Is there a specific blood test used to pinpoint toxicity? Thank you.

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@moey2720
I do not know about pinpointing toxicity, but if you just have your D3 checked, it will certainly show if it is high. Please talk to your DR.

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Profile picture for kdalda75 @kndaustin71

@sewing4life Why are you taking it?

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@kndaustin71 I do not know why the above person is taking it, but I am taking it because my D3 went so low that they were testing me for parathyroid. I also was having osteopenia which D3 can help with.

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Profile picture for Colleen Young, Connect Director @colleenyoung

@spacemonkey, according to this article from Mayo Clinic:
- What is vitamin D toxicity? Should I be worried about taking supplements? https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/vitamin-d-toxicity/faq-20058108

"The main concern of vitamin D toxicity is a buildup of calcium in the blood. This is called hypercalcemia. Hypercalcemia can cause upset stomach and vomiting, weakness, and frequent urination. It also can lead to bone pain and kidney troubles such as kidney stones."

I see you posted your question in the Heart & Blood Health support group. Are you experiencing symptoms that lead you to think you might be experiencing from too much vitamin in the body? Have you been taking large doses of vitamin D?

Jump to this post

@colleenyoung yes people should be concerned about overdosing on vitamin D. However, if you are taking vitamin D under doctors orders, then periodically a blood test will be prescribed to make sure you stay in range. Taking 2000 to 5000 units a day, if your initial blood test said you need two, won’t cause toxicity! Just about everybody, especially those with dark complexion need some kind of vitamin D supplement by the time they were in their 50s/60s. Going out in the sunshine helps your body metabolize its own vitamin D but for some of us it is not enough. If you are of Medicare age, you get a wellness check once a year and have your doctor run a metabolic lab test and make sure your vitamin D levels are checked. Being on D will help control your A1c. They worked together.

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My doctor said Medicare does not cover Vitamin D test.

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Profile picture for htaish @htaish

@kndaustin71 I do not know why the above person is taking it, but I am taking it because my D3 went so low that they were testing me for parathyroid. I also was having osteopenia which D3 can help with.

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@htaish you need to take k2 in conjunction with vitamin D.

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Profile picture for moey2720 @moey2720

No, I have not been diagnosed with 'toxicity', but I do take Vitamin D3 daily. I take 2 softgel tablets of D3 2000IU (50mcg). I am 86 with high blood pressure, past heart attack, a couple of PCI's in the last 5 years, Pacemaker for about 13 years. I take other prescribed medications and last had Labs drawn about a week ago, with no mention of high D. Is there a specific blood test used to pinpoint toxicity? Thank you.

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@moey2720 you do need to take a vitamin d test. My doctor said Medicare does not pay for vitamin d test but a friend uses Ulta Lab. You go online and buy whatever blood test you want, no doctor's prescription needed. Then you print out the order form and take it to a lab nearby, like Quest diagnostics or Lab Corp or whatever lab in your area. You will get the result online. It is totally legitimate.

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