There are about a half-dozen different products that can be used for iron infusions. https://www.uptodate.com/conte...ncy-anemia-in-adults
These include ferric carboxymaltose (FCM), ferric gluconate (FG), ferumoxytol, iron sucrose (IS), iron isomaltoside (not available in the United States), and low molecular weight iron dextran (LMW ID). All of these products are equally effective in treating iron deficiency. Major differences include cost, formulary/purchasing agreements, and number of visits/time required to administer the full dose.
●Cost – The relative costs of IV iron products may vary depending on local institutional purchasing agreements. In the United States, LMW ID is relatively inexpensive (typically, half the price of ferumoxytol and one-fourth the price of FCM).
●Time for administration – Administration of LMW ID is done over one hour; other products may be infused more rapidly.
●Number of doses required – The choice of product may also be influenced by the frequency of office visits. As examples, patients undergoing dialysis or chemotherapy may have frequent office visits during which frequent low doses of FG or IS can be administered. In contrast, patients for whom frequent visits are not otherwise necessary may prefer products that can be administered in one or two visits, such as FCM, ferumoxytol, or LMW ID.