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Systematic (IUPAC) name
Clinical data
AHFS/ Micromedex Detailed Consumer Information
Pharmacokinetic data
Biological half-life 10 minutes or less
CAS Number 5534-95-2 YesY
ATC code V04CG04 (WHO)
PubChem CID 9853654
DrugBank DB00183 YesY
ChemSpider 8029364 YesY
UNII EF0NX91490 YesY
KEGG D01631 YesY
Chemical data
Formula C37H49N7O9S
Molar mass 767.893 g/mol

Pentagastrin (trade name Peptavlon) is a synthetic polypeptide that has effects like gastrin when given parenterally.[2] It stimulates the secretion of gastric acid, pepsin, and intrinsic factor, and has been used as a diagnostic aid as the pentagastrin-stimulated calcitonin test.

Pentagastrin binds to the cholecystokinin-B receptor, which is expressed widely in the brain. Activation of these receptors activates the phospholipase C second messenger system. When given intravenously it may cause panic attacks.[3]

Pentagastrin's IUPAC chemical name is "N-((1,1-dimethylethoxy)carbonyl)-beta-alanyl-L-tryptophyl-L-methionyl-L-alpha-aspartyl-L-phenylalaninamide".

Pentagastrin stimulation test[edit]

Pentagastrin is also used as a stimulation test to elevate of several hormones, such as serotonin. It provokes flushing and is useful in evaluating patients who describe flushing, but have normal or only marginally elevated biochemical markers for carcinoid syndrome.

It has been used to stimulate ectopic gastric mucosa for the detection of Meckels diverticulum by nuclear medicine.

It is used to stimulate calcitonin release from residual parafollicular cell C-cells after total thyroidectomy for medullary thyroid carcinoma.

See also[edit]


  1. ^ Martindale (1993). The extra pharmacopoeia (30th ed.). London: Pharmaceutical Press. ISBN 978-0853693000. 
  2. ^ Braganza, J. M.; Herman, K; Hine, P; Kay, G (1979). "The effect of pentagastrin on peptic secretion in man". The Journal of Physiology. 289: 9–16. doi:10.1113/jphysiol.1979.sp012721. PMC 1281354free to read. PMID 379305. 
  3. ^ van Megen, HJ; Westenberg, HG; den Boer, JA; Haigh, JR; Traub, M (April 1994). "Pentagastrin induced panic attacks: enhanced sensitivity in panic disorder patients.". Psychopharmacology. 114 (3): 449–55. doi:10.1007/bf02249335. PMID 7855203.