Depression is a prevalent condition in pregnancy affecting up to 13% of women [1]. Untreated antenatal depression is associated with poor self-care during pregnancy, risk of postpartum depression, risk of impaired maternal–infant attachment and delays in infant development when it persists into the postpartum period [2] and [3]. Available treatments for depressive disorders include psychotherapeutic interventions and antidepressant medications such as selective serotonin inhibitors (SSRIs) and tricyclic antidepressants. Although psychotherapy may be a reasonable treatment option for mild to moderate depression, antidepressants are often required for the effective treatment of severe maternal depression [4] and [5]. Recent estimates of antidepressant exposure among pregnant women range from 3% to 13% [6] and [7].