Can You Take Bovine Thyroid Extract and Calcium Together?

Dose or timing may matter

The short answer

Calcium can bind to thyroid hormones in bovine thyroid extract, significantly reducing their absorption and effectiveness.

How to arrange timing

Take bovine thyroid extract at least 4 hours apart from calcium supplements.

Reference

Reference noted for this combination: Singh N, et al. Endocr Pract. 2009

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.