vitamin d3 is often the form of vitamin d that you’ll see in vitamins and supplements. the answer to this question depends on your age. women 70 and under need 600 iu of vitamin d a day. women 71 and over need 800 iu to help support strong bones. older people need more vitamin d because their skin doesn’t create vitamin d as efficiently when exposed to the sun. their kidneys are also not as effective at producing the active form of vitamin d. vitamin d is critical for strong bones as it helps your body absorb calcium. you’ll often see calcium and vitamin d combined in the same supplement. so it’s important to get enough of both of those nutrients.
what is the recommended daily dosage of vitamin d3 for women?