First generation antihistaminic and alchylamine drug, with sedative effect. Its active isomer is Dexchlorfeniramine. Likely inhibition of lactation within the first weeks post delivery because anti-prolactin effect.. Short-term and low dose (2 mg one or twice-day) treatment is compatible with breastfeeding. Be aware of somnolence in the child. For long-term treatment an alternative drug should be preferred. Compounds in association with expectorants, corticoids and cough relief medicines are available. Avoid drug associations especially while breastfeeding. Follow-up for sedation and feeding ability of the infant. Bed-sharing is not recommended for mothers who are taking this medication.