If you’re referring to the headline “Pharmacist issues warning to anyone who takes vitamin D,” the real warning is mainly about taking unnecessarily high doses, not about avoiding vitamin D altogether.
What vitamin D users should know
More isn’t necessarily better. Excessive vitamin D can raise calcium levels and, in severe cases, cause kidney stones, kidney damage, abnormal heart rhythms and other serious problems.
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For most adults, the general upper intake level is 4,000 IU (100 mcg) per day from all sources. A doctor may temporarily prescribe more to treat a documented deficiency.
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Possible signs of excessive vitamin D include nausea, vomiting, weakness, confusion, excessive thirst or urination, dehydration and kidney stones.
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Medication interactions matter. Vitamin D can interact with drugs including orlistat, steroids and thiazide diuretics. High-dose vitamin D may also affect some statins.
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If you’re taking vitamin D regularly, especially at a high dose, tell your doctor or pharmacist about all medicines and supplements you’re using.
Bottom line: Don’t stop a prescribed vitamin-D treatment because of a social-media warning. The safest approach is to use the dose recommended for your particular situation and avoid adding high-dose supplements without medical advice.
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