Vitamin D - Mayo Clinic A simple blood test can check the levels of this vitamin in your blood Taking a vitamin D supplement or a multivitamin with vitamin D may help improve bone health The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years
Vitamin D - Uses, Side Effects, And More - WebMD Vitamin D supplements are commonly used to treat and prevent vitamin D deficiency, for weak and brittle bones, cavities, psoriasis, and hay fever
Best Vitamin D Supplements - US News Health Best Vitamin D Supplements Our panel of pharmacists ranked the best Vitamin D supplements, with Nature Made topping the list as the top-recommended brand
Best vitamin D supplements 2025 - BBC Good Food With the help of expert nutritionist Kerry Torrens, the Good Food Health experts tested a range of vitamin D supplements Read on to find the best for you