Three groups of 100 women deemed to present a risk of delay in lactation were given either Lac caninum 5CH, or an association of Agnus castus 5CH + Ricinus communis 4CH, or no treatment at all. No effect of the homeopathic remedies on the onset of lactation was found among multiparous women nor any effect of Lac Caninum whatever the parity or the mode of delivery. On the contrary, among primiparous women, except cases of scheduled caesarean section, Agnus castus + Ricinus communis led to a very significant reduction in the delay of lactation, reaching 8h, compared to the group treated with Lac caninum and to the group without treatment (p=0.009). Among vaginal deliveries, the effect was more marked in case of spontaneous onset of labor.