How much iron a patient can tolerate at a time given intravenously

The dose of parenteral iron is calculated using formula 4.4 x body weight(kg) x Hb deficit If the dose is more than 50ml (each ml has 50mg of iron i.e. 2500mg iron) then half the dose is given on day one and second half on next day. Thus maximum amount is 2500mg Reference: Dutta Obstetrics 7th edition Page no: 269