Calcium carbonate, antacids, and product-quality questions

Understand the connection

Calcium carbonate is used in some supplements and antacids. Ingredient source and purification are relevant to product quality because minerals can carry trace contaminants.

Follow the pathway

Dr. Purser discusses lead contamination, refined versus natural mineral sources, and the difference between a potential manufacturing concern and confirmed exposure. An antacid’s name alone does not establish that it contains a harmful amount of lead.

Bring these questions to your visit

Ask about verified quality testing and whether there is a reason to assess an actual exposure. Review frequent antacid use, kidney function, and interactions with other medicines, including thyroid replacement.