Can You Take Calcium and Silicon Together?

May affect absorption

The short answer

Calcium and silicon may compete for absorption in the GI tract. Research suggests high calcium intake may reduce silicon bioavailability.

How to arrange timing

Consider separating calcium and silicon supplements by 2 hours.

Reference

Reference noted for this combination: Am J Clin Nutr 2002; Jugdaohsingh R

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.