for the dose in IU or micrograms. Remember that 100 mcg equals 4,000 IU. If you already take a multivitamin, check whether it contains vitamin D before adding another supplement.
Because vitamin D is fat-soluble, it is often taken with food. The NIH explains that fat in the gut enhances vitamin D absorption, although some vitamin D can still be absorbed without fat.
It is also smart to talk to a healthcare professional before taking high doses, especially if you have health conditions, take medication, are pregnant, or are
