Re: How to go cold turkey from 150mg's of methadone! The easy way. Thank you Oggy for your VERY informative post. I would just like to clarify you are referring to the 1ml/1mg strength in your original post and not the stronger 10mg/1ml thats common in the states. My friend was able to grab a 500ml of the green liquid from the UK and wants to make sure he is following your method correctly.