Substantial quantities of lead have been reported in some over-the-counter calcium supplement preparations, including not only bone-meal and dolomite, but also over-the-counter natural and refined calcium carbonate formulations. Examination of this issue is warranted given recent increases in physician recommendations for calcium supplements for prevention and treatment of osteoporosis.
End-Stage Renal Disease Program, Division of Nephrology, Hypertension, and Transplantation, University of Florida, Box 100224, Gainesville, FL 32610-0224, USA. Rossea@medicine.ufl.edu
