This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:

Primary objective

To assess the effect of medication taken by mothers to augment the breastfeeding of their preterm or hospitalised infants on the outcome of breastmilk supply (breastmilk volume and duration of breastfeeding). Trials of breastmilk augmenting medications that are compared with placebo or with other augmenting medications are to be considered.

Secondary objective

To assess maternal and infant adverse effects from medications taken to augment breastfeeding, when compared with placebo.