The absorption of heme iron is several times higher and the side-effects rate significantly lower than for non-heme oral iron.
The tolerance and efficacy of heme iron does not change over even longer time. This is good news for the chronics.
Heme iron is absorbed through a separate pathway and does not have to be discontinued when intravenous treatment is started.
This can allow for longer intervals between resource-heavy, inconvenient and painful injections.
Intravenous treatment is usually started only when oral non-heme treatment fails due to side-effects.
Heme iron allows for self-medication because of better tolerance.
It would thus mean a significant gain in the patient Quality of Life. It gives freedom to travel, for instance.