Anacidity (diagnosis)—Pentagastrin is indicated as a diagnostic aid for evaluation of gastric acid secretory function. It is effective in testing for anacidity (achlorhydria) in patients with suspected pernicious anemia, atrophic gastritis, or gastric carcinoma. It is also effective in determining the reduction in acid output after operations for peptic ulcer, such as vagotomy or gastric resection.
* Dosing Information
Hypersecretory conditions, gastric (diagnosis)—Pentagastrin is indicated as a diagnostic aid in testing for gastric hypersecretion in patients with suspected duodenal ulcer or postoperative stomal ulcer, and for the diagnosis of Zollinger-Ellison tumor
:* Dosage
=====Condition2=====
* Dosing Information
:* Dosage
=====Condition3=====
* Dosing Information
:* Dosage
=====Condition4=====
* Dosing Information
:* Dosage
<!--Off-Label Use and Dosage (Adult)-->
<!--Guideline-Supported Use (Adult)-->
====Dosage====
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* The intravenous infusion dose has ranged from 0.1 to 12 mcg (0.0001 to 0.012 mg) per kg of body weight per hour administered in a 0.9% sodium chloride injection. It can also be used as a subcutaneous injection for gastric function study with a dose of 6 mcg (0.006 mg) per kg of body weight.
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* Developed by:
* Class of Recommendation:
* Strength of Evidence:
* Dosing Information
:* Dosage
=====Condition2=====
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<!--Non–Guideline-Supported Use (Adult)-->
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|offLabelAdultNoGuideSupport=There is limited information regarding <i>Off-Label Non–Guideline-Supported Use</i> of {{PAGENAME}} in adult patients.
* Dosing Information
:* Dosage
=====Condition2=====
There is limited information regarding <i>Off-Label Non–Guideline-Supported Use</i> of {{PAGENAME}} in adult patients.
<!--Pediatric Indications and Dosage-->
<!--Pediatric Indications and Dosage-->
<!--FDA-Labeled Indications and Dosage (Pediatric)-->
<!--FDA-Labeled Indications and Dosage (Pediatric)-->
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|fdaLIADPed=There is limited information regarding <i>FDA-Labeled Use</i> of {{PAGENAME}} in pediatric patients.
* Dosing Information
:* Dosage
=====Condition2=====
There is limited information regarding <i>FDA-Labeled Use</i> of {{PAGENAME}} in pediatric patients.
<!--Off-Label Use and Dosage (Pediatric)-->
<!--Off-Label Use and Dosage (Pediatric)-->
<!--Guideline-Supported Use (Pediatric)-->
<!--Guideline-Supported Use (Pediatric)-->
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|offLabelPedGuideSupport=There is limited information regarding <i>Off-Label Guideline-Supported Use</i> of {{PAGENAME}} in pediatric patients.
* Developed by:
* Class of Recommendation:
* Strength of Evidence:
* Dosing Information
:* Dosage
=====Condition2=====
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<!--Non–Guideline-Supported Use (Pediatric)-->
<!--Non–Guideline-Supported Use (Pediatric)-->
|offLabelPedNoGuideSupport======Condition1=====
|offLabelPedNoGuideSupport=There is limited information regarding <i>Off-Label Non–Guideline-Supported Use</i> of {{PAGENAME}} in pediatric patients.
* Dosing Information
:* Dosage
=====Condition2=====
There is limited information regarding <i>Off-Label Non–Guideline-Supported Use</i> of {{PAGENAME}} in pediatric patients.
<!--Contraindications-->
<!--Contraindications-->
|contraindications=* Condition1
|contraindications=
<!--Warnings-->
<!--Warnings-->
|warnings=* Description
|warnings=
====Precautions====
* Description
<!--Adverse Reactions-->
<!--Adverse Reactions-->
<!--Clinical Trials Experience-->
<!--Clinical Trials Experience-->
|clinicalTrials=There is limited information regarding <i>Clinical Trial Experience</i> of {{PAGENAME}} in the drug label.
|postmarketing=There is limited information regarding <i>Postmarketing Experience</i> of {{PAGENAME}} in the drug label.
|postmarketing=There is limited information regarding <i>Postmarketing Experience</i> of {{PAGENAME}} in the drug label.
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<!--Drug Interactions-->
<!--Drug Interactions-->
|drugInteractions=* Drug
|drugInteractions=* The following may affect pentagastrin’s action:
:* Description
Antacids, anticholinergics, histamine H2-receptor antagosnists, or omeprazole
Acute, obstructing, penetrating or bleeding peptic ulcers
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|administration=* Oral
|administration=* intravenous infusion
|monitoring=There is limited information regarding <i>Monitoring</i> of {{PAGENAME}} in the drug label.
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|monitoring=There is limited information regarding <i>Monitoring</i> of {{PAGENAME}} in the drug label.
* Description
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|overdose====Acute Overdose===
|overdose=There is limited information regarding <i>Overdose</i> of {{PAGENAME}} in the drug label.
====Signs and Symptoms====
* Description
====Management====
* Description
===Chronic Overdose===
There is limited information regarding <i>Chronic Overdose</i> of {{PAGENAME}} in the drug label.
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|mechAction=*
|mechAction=* The exact mechanism by which Pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since Pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion.
<!--Structure-->
<!--Structure-->
|structure=*
|structure=* Pentagastrin, a diagnostic aid, is supplied as a sterile solution (1.1 ml/5 ml vial) containing:
250 micrograms Pentagastrin per ml
0.8 mg Methylparaben and 0.2 mg Propylparaben per mL
0.9 mg sodium chloride per mL
pH 8
: [[File:{{PAGENAME}}01.png|thumb|none|600px|This image is provided by the National Library of Medicine.]]
: [[File:{{PAGENAME}}01.png|thumb|none|600px|This image is provided by the National Library of Medicine.]]
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|PK=The exact mechanism by which Pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since Pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion.
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|storage=* Keep refrigerated between 2◦ and 8◦C. Protect from light
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Overview
Pentagastrin is a diagnostic aid that is FDA approved for the diagnosis of Anacidity, Hypersecretory conditions. Common adverse reactions include Nausea, abdominal cramps.
Adult Indications and Dosage
FDA-Labeled Indications and Dosage (Adult)
Indications
Anacidity (diagnosis)—Pentagastrin is indicated as a diagnostic aid for evaluation of gastric acid secretory function. It is effective in testing for anacidity (achlorhydria) in patients with suspected pernicious anemia, atrophic gastritis, or gastric carcinoma. It is also effective in determining the reduction in acid output after operations for peptic ulcer, such as vagotomy or gastric resection.
Hypersecretory conditions, gastric (diagnosis)—Pentagastrin is indicated as a diagnostic aid in testing for gastric hypersecretion in patients with suspected duodenal ulcer or postoperative stomal ulcer, and for the diagnosis of Zollinger-Ellison tumor
Dosage
The intravenous infusion dose has ranged from 0.1 to 12 mcg (0.0001 to 0.012 mg) per kg of body weight per hour administered in a 0.9% sodium chloride injection. It can also be used as a subcutaneous injection for gastric function study with a dose of 6 mcg (0.006 mg) per kg of body weight.
Off-Label Use and Dosage (Adult)
Guideline-Supported Use
There is limited information regarding Off-Label Guideline-Supported Use of Pentagastrin in adult patients.
Non–Guideline-Supported Use
There is limited information regarding Off-Label Non–Guideline-Supported Use of Pentagastrin in adult patients.
Pediatric Indications and Dosage
FDA-Labeled Indications and Dosage (Pediatric)
There is limited information regarding FDA-Labeled Use of Pentagastrin in pediatric patients.
Off-Label Use and Dosage (Pediatric)
Guideline-Supported Use
There is limited information regarding Off-Label Guideline-Supported Use of Pentagastrin in pediatric patients.
Non–Guideline-Supported Use
There is limited information regarding Off-Label Non–Guideline-Supported Use of Pentagastrin in pediatric patients.
Contraindications
There is limited information regarding Pentagastrin Contraindications in the drug label.
Warnings
There is limited information regarding Pentagastrin Warnings' in the drug label.
Australian Drug Evaluation Committee (ADEC) Pregnancy Category
There is no Australian Drug Evaluation Committee (ADEC) guidance on usage of Pentagastrin in women who are pregnant.
Labor and Delivery
There is no FDA guidance on use of Pentagastrin during labor and delivery.
Nursing Mothers
There is no FDA guidance on the use of Pentagastrin with respect to nursing mothers.
Pediatric Use
There is no FDA guidance on the use of Pentagastrin with respect to pediatric patients.
Geriatic Use
There is no FDA guidance on the use of Pentagastrin with respect to geriatric patients.
Gender
There is no FDA guidance on the use of Pentagastrin with respect to specific gender populations.
Race
There is no FDA guidance on the use of Pentagastrin with respect to specific racial populations.
Renal Impairment
There is no FDA guidance on the use of Pentagastrin in patients with renal impairment.
Hepatic Impairment
There is no FDA guidance on the use of Pentagastrin in patients with hepatic impairment.
Females of Reproductive Potential and Males
There is no FDA guidance on the use of Pentagastrin in women of reproductive potentials and males.
Immunocompromised Patients
There is no FDA guidance one the use of Pentagastrin in patients who are immunocompromised.
Administration and Monitoring
Administration
intravenous infusion
Monitoring
There is limited information regarding Monitoring of Pentagastrin in the drug label.
IV Compatibility
There is limited information regarding IV Compatibility of Pentagastrin in the drug label.
Overdosage
There is limited information regarding Overdose of Pentagastrin in the drug label.
Pharmacology
There is limited information regarding Pentagastrin Pharmacology in the drug label.
Mechanism of Action
The exact mechanism by which Pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since Pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion.
Structure
Pentagastrin, a diagnostic aid, is supplied as a sterile solution (1.1 ml/5 ml vial) containing:
250 micrograms Pentagastrin per ml
0.8 mg Methylparaben and 0.2 mg Propylparaben per mL
0.9 mg sodium chloride per mL
pH 8
There is limited information regarding Pharmacodynamics of Pentagastrin in the drug label.
Pharmacokinetics
The exact mechanism by which Pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since Pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion.
Nonclinical Toxicology
There is limited information regarding Nonclinical Toxicology of Pentagastrin in the drug label.
Clinical Studies
There is limited information regarding Clinical Studies of Pentagastrin in the drug label.
How Supplied
Storage
Keep refrigerated between 2◦ and 8◦C. Protect from light
Images
Drug Images
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Package and Label Display Panel
PACKAGE LABEL.PRINCIPAL DISPLAY PANEL
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Ingredients and Appearance
This image is provided by the National Library of Medicine.