Tramadol and its metabolite, O-desmethyltramadol (M1), are existing in human milk. There is no info on the consequences from the drug around the breastfed toddler or the consequences with the drug on milk creation. The M1 metabolite is more powerful than tramadol in mu opioid receptor binding [see Clinical Pharmacology https://alexismeseo.activoblog.com/43573888/about-sleeping-tablets-zopiclone-7-5mg