The conversion of ferrous fumarate to ferrous sulfate and sodium iron pyrophosphate has been documented. Additionally, ferrous fumarate is utilized in liquid iron formulations, alongside cyanocobalamin, and in tablets that combine ferrous fumarate with folic acid. It is important to consider whether ferrous gluconate is safe for consumption. Moreover, the Chemist Warehouse offers calcium citrate, which is a beneficial supplement. In summary, ferrous fumarate plays a significant role in various iron supplements, and products like calcium citrate can be found at Chemist Warehouse, highlighting the importance of these compounds in nutritional health.