Tramadol and its metabolite, O-desmethyltramadol (M1), are existing in human milk. There is not any information on the effects on the drug over the breastfed infant or the consequences of the drug on milk production. The M1 metabolite is more strong than tramadol in mu opioid receptor binding [see Clinical https://trevorwlwgu.onzeblog.com/37447547/about-sleeping-tablets-zopiclone-7-5mg