These are 2 of the iron iv treatments.They differ by manufacturers and here's the major problem that we may not be informed of.The inactive ingredients are just as important as the active ingredients. The smallest difference in the ingredients could cause a severe or near fatal allergic reaction! Sensitivity to medications seems to be quite common for alot of us. I research on this matter for myself and would like to say learn as much as you can about your medications and your sensitivities to them. It could save your life! Thanks for reading.