Centrally acting muscle relaxant. Since the last update we have not found published data on its excretion in breast milk. Its pharmacokinetic data: low molecular weight, high liposolubility (Acorda 2006), makes it probable that it could pass to milk in potentially significant quantities. During breastfeeding, it seems prudent to avoid it (Hutchinson 2013) or to use it very sporadically and limited to sufficient minimum doses, monitoring for possible sedation of the infant, especially during the first 3 months of life.