Author(s): DR HaddenJournal Issue: Volume 35: Issue 3: 2005 Format Abstract The hypoglycaemic drug metformin is derived from galegine, which is found naturally in Goat’s rue (gallega officinalis). This plant is speading northwards in the UK. PDF https://www.rcpe.ac.uk/sites/default/files/hadden_goats_rue.pdf