Many people are saying up to 1200 units every single day. Why? Because you need that much D to absorb the calcium, you need that much D to have good muscle function. If you have less D in your ...

and vitamin D 3 is further metabolized in the liver and kidneys to the bioactive forms of the molecule. These metabolites are secreted from the kidneys and build up in target organs such as the ...

Some liquid calcium supplements may also contain vitamin D, which helps the body absorb ... making them a more efficient way to get your daily dose of calcium. Which form of calcium is most ...