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
5 Best Vitamin D Supplements - Medical News Today The best vitamin D supplement depends on a person's age, dietary needs, and their vitamin D levels Learn more about 6 of the best vitamin D supplements
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