Tramadol and its metabolite, O-desmethyltramadol (M1), are present in human milk. There's no info on the consequences on the drug within the breastfed infant or the effects of the drug on milk production. The M1 metabolite is a lot more potent than tramadol in mu opioid receptor binding [see Scientific https://buy-codeine-online82603.nizarblog.com/37621826/buy-pregablin-online-for-dummies