Why is the iron "injections" option a near-last resort?
Even though this route replenishes iron stores more efficiently and usually more quickly, it is associated with potential problems and is therefore not a suitable first choice. Some people develop an allergic reaction to it (and therefore a test dose in hospital is an absolute prerequisite). Also, the injections have to be given deep in the muscle and are fairly painful. Moreover, there is a small risk of developing abscesses at the site of the injection. There is also the fact that each course will consist of many injections (at least ten) which have to be administered either daily or on alternate days. This is certainly not everybody's cup of tea and it is evident that the oral route is, in many respects, a great deal better.
The degree of need for this is dependent on a few factors: If the mother was taking iron during pregnancy because she was found to be iron-deficient, then it is advisable that she continues to take iron for several weeks (six to eight) after delivery.
Ø If the blood loss at delivery was heavy, even if she was not particularly anaemic during pregnancy, the advice will be to start or continue taking iron, again, for several weeks at least.
Ø If she is breast-feeding, the need for iron supplements is increased.
Ø If she is a total vegetarian, where the diet may not supply adequate iron, supplements are strongly advised.