Vitamin D for Stronger Bones
According to the National Osteoporosis Foundation, adults age 50 and older need between 800 and 1,000 IU of vitamin D daily. (Some people need more, so talk with your doctor about the correct amount for you.)
If you aren’t getting enough vitamin D from sunlight and food, consider taking a supplement. But, before adding a vitamin D supplement, check to see if any of the other supplements, multivitamins or medications you take contain vitamin D. Many calcium supplements also contain vitamin D.
Vitamin D supplements can be taken with or without food. While your body needs vitamin D to absorb calcium, you do not need to take it at the same time as a calcium supplement. If you need help choosing a vitamin D supplement, ask your doctor or pharmacist to recommend one.
Source: National Osteoporosis Foundation