Can we take vit d tab regularly every week
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NIH Office Dietary Supplements vitamin D fact sheet upper limit supplement adults
Yes, a low maintenance dose of vitamin D can be taken weekly, but the dose matters.
- For most healthy adults, usual total requirement is about 600-800 IU/day, equivalent to roughly 4,000-6,000 IU once weekly.
- High-dose tablets/capsules such as 50,000 or 60,000 IU weekly should not be taken indefinitely without medical advice. They are often used for confirmed deficiency for a limited course, then reduced to a maintenance dose.
- Long-term excess can raise calcium levels and cause nausea, constipation, thirst, frequent urination, kidney stones, or kidney problems.
NIH lists a general adult upper limit of 4,000 IU/day from all sources, about 28,000 IU/week, unless a clinician prescribes more for a specific reason. See the NIH vitamin D fact sheet.
It is best to check 25-OH vitamin D, calcium, and kidney status if you plan regular supplementation, especially if you have kidney stones/disease, high calcium, sarcoidosis, hyperparathyroidism, or take thiazide diuretics.
Tell me the strength written on your tablet, for example 1,000 IU or 60,000 IU, and why you are taking it, and I can help interpret whether weekly use is reasonable.
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