If you’re referring to a headline saying a pharmacist has issued a warning to everyone who takes vitamin D, the key point is that the warning is about excessive or inappropriate supplementation, not vitamin D itself.
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Vitamin D is an essential nutrient, and supplements can be appropriate when someone has a deficiency or increased need.
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For adults, the general upper daily intake limit is 4,000 IU (100 mcg) from all sources. A doctor may temporarily prescribe higher doses to treat a documented deficiency. ODs+1
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Taking excessive amounts over time can cause high blood calcium, leading to nausea, vomiting, weakness, excessive thirst/urination, kidney stones and, in severe cases, kidney damage or abnormal heart rhythms. ODs+1
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Vitamin D can also interact with some medicines, including thiazide diuretics, steroids, orlistat, and some statins. ODs
So, don’t stop a prescribed vitamin-D treatment solely because of a social-media headline. The dose and reason you’re taking it matter.
If you tell me how many IU of vitamin D you take, how often, and whether it was prescribed, I can explain whether that dose falls within commonly recommended limits.
