Select the region of the corresponding author. For Letters To Editor select UK.Select substance type. Use 'Drugs General' when there is more than one substance.Select option closest to the methodology used.Start typing country here to narrow selection in drop-down menu to the right.Type or paste in your covering letter including your ethical statement. Click on link to see instructions to authors.Give word count excluding title, abstract, references and tables. If the word count exceeds 3500, give justification in the covering letter.If you have difficulty attaching manuscript, please email it to gill@addictionjournal.org