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Level 4
  
A - Alimentary tract and metabolismA06 - LaxativesA06A - LaxativesA06AC - Laxatives, bulk producers
  
A06AC01 - Ispaghula (Psylla Seeds)A06AC02 - EthuloseA06AC03 - SterculiaA06AC05 - LinseedA06AC06 - MethylcelluloseA06AC07 - Triticum (wheat fibre)A06AC08 - Polycarbophil CalciumA06AC51 - Ispaghula, combinationsA06AC53 - Sterculia, combinationsA06AC55 - Linseed, combinations
  
 
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