Found all over the world, calcite is the most stable form of calcium carbonate and is the main mineral found in limestone.

For instance, calcium carbonate is best absorbed with food, while calcium citrate can be taken on an empty stomach. However, even with the right type of supplement, pairing it with certain foods ...

We used a two-step extraction process to isolate as diverse chemical mixtures as possible," says Georg Braun, postdoctoral researcher in Beate Escher's working group and first author of the study.