Trimebutine maleate is a drug with antimuscarinic and weak mu opioid agonist effects.Target: Opioid ReceptorTrimebutine is an agonist of peripheral mu, kappa and delta opiate receptors, used as spasmolytic agent for treatment of both acute and chronic abdominal pain [1]. The major product from drug metabolism of trimebutine in human beings is nor-trimebutine, which comes from removal of one of the methyl groups attached to nitrogen. Trimebutine exerts its effects in part due to causing a premature activation of phase III of the migrating motor complex in the digestive tract [2, 3].

[1]. Kaneto, H., M. Takahashi, and J. Watanabe, The opioid receptor selectivity for trimebutine in isolated tissues experiments and receptor binding studies. J Pharmacobiodyn, 1990. 13(7): p. 448-53. [2]. Roman, F.J., et al., Pharmacological properties of trimebutine and N-monodesmethyltrimebutine. J Pharmacol Exp Ther, 1999. 289(3): p. 1391-7. [3]. Hiyama, T., et al., Effectiveness of prokinetic agents against diseases external to the gastrointestinal tract. J Gastroenterol Hepatol, 2009. 24(4): p. 537-46.