Gastric intrinsic factor

Identification

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Name
Gastric intrinsic factor
Accession Number
DB09349
Type
Biotech
Groups
Approved, Experimental
Biologic Classification
Protein Based Therapies
Other protein based therapies
Description

Intrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach that is necessary for the absorption of vitamin B12 (cobalamin) later on in the small intestine. When vitamin B12 is provided in combination with intrinsic factor, intrinsic factor reduces protease degradation and increases absorption of Vitamin B12.

Intrinsic factor is not currently available in any FDA or Health Canada approved products. However, it is currently in the marketed (but unapproved) product Hematogen in combination with cyanocobalamin (synthetic Vitamin B12), ferrous fumarate, and ascorbic acid for the treatment of anemias responsive to oral iron therapy.

Protein chemical formula
Not Available
Protein average weight
Not Available
Sequences
Not Available
Synonyms
  • Intrinsic factor
Product Images
Unapproved/Other Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing End
ChromagenGastric intrinsic factor (100 mg/1) + Ascorbic acid (60 mg/1) + Cyanocobalamin (10 ug/1) + Ferrous asparto glycinate (25 mg/1) + Ferrous fumarate (50 mg/1) + Folic acid (250 ug/1) + Levomefolic acid (750 ug/1) + Zinc (12 mg/1)CapsuleOralAvion Pharmaceuticals, Llc2017-01-23Not applicableUs
HematogenGastric intrinsic factor (100 mg/1) + Ascorbic acid (250 mg/1) + Cyanocobalamin (10 ug/1) + Ferrous fumarate (66 mg/1)CapsuleOralNnodum Pharmaceuticals2007-05-10Not applicableUs63044 0631 19 nlmimage10 23409194
NiferexGastric intrinsic factor (100 mg/1) + Ascorbic acid (60 mg/1) + Cyanocobalamin (25 ug/1) + Ferrous asparto glycinate (50 mg/1) + Folic acid (250 ug/1) + Iron Dextran (100 mg/1) + Levomefolic acid (750 ug/1) + Succinic acid (50 mg/1) + Zinc (15 mg/1)TabletOralAvion Pharmaceuticals, Llc2017-01-23Not applicableUs
PuralorGastric intrinsic factor (2.5 mg/1) + 1-(c14-c18 esteroyl)-2-docosahexanoyl-sn-glycero-3-phosphocholine (5 mg/1) + 1-(c14-c18 esteroyl)-2-docosahexanoyl-sn-glycero-3-phosphoethanolamine (2.5 mg/1) + Acetylcysteine amide (5 mg/1) + Ascorbic acid (25 mg/1) + Cholecalciferol (100 [iU]/1) + Citric acid (1.6 mg/1) + Cobamamide (2 mg/1) + Egg phospholipids (42.5 mg/1) + Folic acid (42.5 mg/1) + Magnesium L-threonate (2.5 mg/1) + Leucovorin (3 mg/1) + Levomefolic acid (0.4 mg/1) + Magnesium glycinate (1 mg/1) + Niacin (0.5 mg/1) + Pantethine (2.5 mg/1) + Papain (20 mg/1) + Riboflavin (0.5 mg/1) + Sodium citrate (0.8 mg/1) + Thiamine chloride (0.5 mg/1)Tablet, chewableOralCenturion Labs2014-01-012017-09-20Us
Categories
UNII
70BT6OQT2Q
CAS number
Not Available

Pharmacology

Indication

Intrinsic factor is not currently available in any FDA or Health Canada approved products. However, it is currently in the marketed (but unapproved) product Hematogen in combination with cyanocobalamin (synthetic Vitamin B12), ferrous fumarate, and ascorbic acid for the treatment of anemias responsive to oral iron therapy.

Pharmacodynamics
Not Available
Mechanism of action

Intrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach that is necessary for the absorption of vitamin B12 (cobalamin) later on in the small intestine. When vitamin B12 is provided in combination with intrinsic factor, intrinsic factor reduces protease degradation and increases absorption of Vitamin B12.

Additional Data Available
Adverse Effects

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Additional Data Available
Contraindications

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Additional Data Available
Blackbox Warnings

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Absorption
Not Available
Volume of distribution
Not Available
Protein binding
Not Available
Metabolism
Not Available
Route of elimination
Not Available
Half life
Not Available
Clearance
Not Available
Toxicity
Not Available
Affected organisms
Not Available
Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
Not Available
Food Interactions
Not Available

References

General References
Not Available
External Links
PubChem Substance
347910446
Wikipedia
Gastric_intrinsic_factor
FDA label
Download (1.53 MB)

Clinical Trials

Clinical Trials
PhaseStatusPurposeConditionsCount
1, 2RecruitingTreatmentPostpartum Anemia1
4TerminatedTreatmentAnemias1

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage forms
FormRouteStrength
CapsuleOral
TabletOral
Tablet, chewableOral
Prices
Not Available
Patents
Not Available

Properties

State
Solid
Experimental Properties
Not Available

Taxonomy

Description
Not Available
Kingdom
Organic Compounds
Super Class
Organic Acids
Class
Carboxylic Acids and Derivatives
Sub Class
Amino Acids, Peptides, and Analogues
Direct Parent
Peptides
Alternative Parents
Not Available
Substituents
Not Available
Molecular Framework
Not Available
External Descriptors
Not Available

Drug created on November 27, 2015 16:06 / Updated on June 04, 2019 07:11