Original: As of 1999 it contained 0.002 % of ammonium ferric citrate , sugar , 32 flavoring agents ( including caffeine -- though caffeine is not listed as an ingredient on the Australian labeling -- and quinine ) and two controversial colourings ( E110 , E124 ) .
Simplified: Although not made from , Irn-Bru does actually contain iron : it has an ammonium ferric citrate content of 0.002 % .