Originally published on, let’s explore the topic of calcium citrate with vitamin D3. So, what is calcium citrate with vitamin D3? This combination is known for its benefits in supporting bone health and improving calcium absorption in the body. Many people incorporate calcium citrate with vitamin D3 into their daily regimen to ensure they are meeting their nutritional needs. Overall, understanding what is calcium citrate with vitamin D3 can help individuals make informed decisions about their health and wellness.