Originally published on, let’s explore the topic of calcium citrate. So, what is calcium citrate? Calcium citrate is a form of calcium that is often used as a dietary supplement. It is known for its high bioavailability, which means it is easily absorbed by the body. If you’re curious about calcium citrate, what is it exactly? This compound is particularly beneficial for individuals who may have difficulty absorbing calcium from other sources. In summary, understanding calcium citrate and what is it can help you make informed decisions about your dietary needs.