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Title: Racecadotril  
Author: World Heritage Encyclopedia
Language: English
Subject: Thiorphan, RB-101, Ecadotril, Paregoric, Laudanum
Collection: Antidiarrhoeals, Carboxylate Esters, Enkephalinase Inhibitors, Propionamides
Publisher: World Heritage Encyclopedia


Systematic (IUPAC) name
(RS)-benzyl N-[3-(acetylthio)-2-benzylpropanoyl]glycinate
Clinical data
Trade names Hidrasec, Tiorfan
Legal status
Routes of
Pharmacokinetic data
Protein binding 90% (active thiorphan metabolite)[1]
Metabolism Liver-mediated[1]
Biological half-life 3 hours[1]
Excretion Urine (81.4%), faeces (8%)[1]
CAS Registry Number  YesY
ATC code A07
PubChem CID:
ChemSpider  N
Synonyms benzyl 2-[3-(acetylthio)-2-benzylpropanamido]acetate
Chemical data
Formula C21H23NO4S
Molecular mass 385.47662 g/mol

Racecadotril, also known as acetorphan, is an antidiarrheal drug which acts as a peripherally acting enkephalinase inhibitor.[2] Unlike other opioid medications used to treat diarrhea, which reduce intestinal motility, racecadotril has an antisecretory effect—it reduces the secretion of water and electrolytes into the intestine.[3] It is available in France (where it was first introduced in ~1990) and other European countries (including Germany, Italy, the UK and Spain) as well as most of South America and some South East Asian countries (including China, India and Thailand), but not in the United States. It is sold under the tradenames Hidrasec or, in France, Tiorfan.[4] In Italy it is sold under the tradename Tiorfix.[4]

Thiorphan is the active metabolite of racecadotril, which exerts the bulk of its inhibitory actions on enkephalinase.[5]

See also


  1. ^ a b c d
  2. ^
  3. ^
  4. ^ a b
  5. ^

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