Can You Take Calcium and IP6 (Inositol Hexaphosphate) Together?

May affect absorption

The short answer

IP6 (phytic acid) is a potent chelator of divalent cations. It may significantly reduce calcium absorption by forming insoluble calcium phytate.

How to arrange timing

Consider separating IP6 and calcium by at least 2 hours.

Reference

Reference noted for this combination: NIH ODS Calcium Fact Sheet; Hurrell RF, Am J Clin Nutr 2003

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.