Is 5000 IU/d3 too high? Understanding High-Dose Vitamin D
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3 min read
The National Institutes of Health sets the Tolerable Upper Intake Level (UL) for vitamin D at 4,000 IU per day for most adults, leading many to question if a 5000 IU/d3 supplement is too high. While exceeding this threshold without medical guidance can pose risks, this dosage may be prescribed by doctors for specific, short-term therapeutic reasons.
