Trimethobenzamide

Trimethobenzamide
Trimethobenzamide
Systematic (IUPAC) name
N-{[4-(2-dimethylaminoethoxy)phenyl]methyl}-
3,4,5-trimethoxy-benzamide
Clinical data
Trade names Tigan
AHFS/Drugs.com monograph
MedlinePlus a682693
Pregnancy cat.  ?
Legal status -only (US)
Routes Oral, rectal, intramuscular
Pharmacokinetic data
Half-life 7 to 9 hours (mean)
Identifiers
CAS number 138-56-7 YesY
ATC code None
PubChem CID 5577
DrugBank APRD01277
ChemSpider 5375 YesY
UNII W2X096QY97 YesY
ChEBI CHEBI:27796 N
ChEMBL CHEMBL1201256 N
Chemical data
Formula C21H28N2O5 
Mol. mass 388.458 g/mol
SMILES eMolecules & PubChem
 N(what is this?)  (verify)

Trimethobenzamide (Tebamide, Tigan) is an antiemetic used to prevent nausea and vomiting. It is often prescribed for patients with gastroenteritis, medication-induced nausea, and other illnesses. Trimethobenzamide is generally considered the most potent antiemetic that does not have effects on the serotonergic, dopaminergic, or histaminergic systems, so it has a lower likelihood of causing undesired side effects. In the United States, it requires a prescription.

Contents

Mechanism of action

Although the specific mechanism through which trimethobenzamide functions is unknown, it is believed to affect the chemoreceptor trigger zone (CTZ) of the medulla oblongata.

Side effects

Possible side effects include drowsiness, dizziness, headache, diarrhea, muscle cramps, and blurred vision. More serious adverse effects include skin rash, tremors, parkinsonism, and jaundice.

Formulations

Trimethobenzamide is marketed under the brand names Tebamide and Tigan, manufactured by GlaxoSmithKline and King Pharmaceuticals, respectively. It is available as oral capsules and injectable formulations.

Trimethobenzamide was also available as a rectal suppository, but such formulations were banned by the U.S. Food and Drug Administration on April 6, 2007 due to unproven efficacy.[1]

See also

References

External links



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