Tramadol and its metabolite, O-desmethyltramadol (M1), are present in human milk. There is not any information on the consequences of the drug around the breastfed infant or the consequences in the drug on milk production. The M1 metabolite is more potent than tramadol in mu opioid receptor binding [see Clinical https://dihydrocodeine30mg91384.madmouseblog.com/17957093/rumored-buzz-on-zolpidem-10mg-price