Regarding Ascoril, it contains multiple active ingredients like terbutaline and bromhexine, which have limited safety data during breastfeeding. It is generally safest to avoid it unless specifically prescribed. For chest congestion, single-ingredient guaifenesin is typically considered compatible with breastfeeding. Non-pharmacological options like warm steam inhalation, saline nasal sprays, and staying well-hydrated are also highly effective and completely safe. Please consult your healthcare provider or pediatrician before starting any new medication to ensure safety for both of you.