U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C15H20N2O2.ClH
Molecular Weight 296.792
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of FENSPIRIDE HYDROCHLORIDE

SMILES

Cl.O=C1NCC2(CCN(CCC3=CC=CC=C3)CC2)O1

InChI

InChIKey=FIKFLLIUPUVONI-UHFFFAOYSA-N
InChI=1S/C15H20N2O2.ClH/c18-14-16-12-15(19-14)7-10-17(11-8-15)9-6-13-4-2-1-3-5-13;/h1-5H,6-12H2,(H,16,18);1H

HIDE SMILES / InChI
Fenspiride is an oxazolidinone spiro compound used as a drug in the treatment of certain respiratory diseases. It is approved for use in Russia for the treatment of acute and chronic inflammatory diseases of ENT organs and the respiratory tract (like rhinopharyngitis, laryngitis, tracheobronchitis, otitis and sinusitis), as well as for maintenance treatment of asthma. Fenspiride is marketed under the brand names Eurespal, Pneumorel, SYRESP, Oxofen and others. Erespal (fenspiride) is a drug with a bronchodilator and spasmolytic effect, which is often used in the complex therapy of bronchial asthma. Fenspiride has a clinically proven ability to increase the activity of the cilia of the bronchial ciliated epithelium, normalize the secretion of the bronchi and reduce its viscosity. Effectively removes bronchial obstruction, restores pulmonary gas exchange. Inhibits the metabolism of arachidonic acid, in parallel blocking histamine H1-receptors, since it is histamine that stimulates the chemical reactions of the transformation of arachidonic acid into the final metabolites-factors of inflammation. Reduces the production of other mediators of inflammation - serotonin and bradykinin. It blocks α-adrenergic receptors, the activation of which increases the secretion of bronchial glands. The complex effect of fenspiride reduces the pathological effect of a number of factors that promote hypersecretion of anti-inflammatory substances and cause obstruction of the bronchial tree. Has a pronounced antispasmodic and myotropic effect.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Target ID: P16599
Gene ID: 103694380|||24835
Gene Symbol: Tnf
Target Organism: Rattus norvegicus (Rat)
4.16 null [pIC50]
3.44 null [pIC50]
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Erespal

Approved Use

The drug is indicated in the complex therapy of respiratory diseases (upper and lower divisions): pharyngitis; Rhinopharyngitis; laryngitis; tracheitis; Tracheobronchitis; Bronchitis (with or without chronic respiratory failure); bronchial asthma; Respiratory symptoms with influenza, measles and whooping cough; sinusitis; otitis; Infection of the respiratory system, in the symptomatic complex of which there is a cough.
Primary
Erespal

Approved Use

The drug is indicated in the complex therapy of respiratory diseases (upper and lower divisions): pharyngitis; Rhinopharyngitis; laryngitis; tracheitis; Tracheobronchitis; Bronchitis (with or without chronic respiratory failure); bronchial asthma; Respiratory symptoms with influenza, measles and whooping cough; sinusitis; otitis; Infection of the respiratory system, in the symptomatic complex of which there is a cough.
Primary
Erespal

Approved Use

The drug is indicated in the complex therapy of respiratory diseases (upper and lower divisions): pharyngitis; Rhinopharyngitis; laryngitis; tracheitis; Tracheobronchitis; Bronchitis (with or without chronic respiratory failure); bronchial asthma; Respiratory symptoms with influenza, measles and whooping cough; sinusitis; otitis; Infection of the respiratory system, in the symptomatic complex of which there is a cough.
Primary
Erespal

Approved Use

The drug is indicated in the complex therapy of respiratory diseases (upper and lower divisions): pharyngitis; Rhinopharyngitis; laryngitis; tracheitis; Tracheobronchitis; Bronchitis (with or without chronic respiratory failure); bronchial asthma; Respiratory symptoms with influenza, measles and whooping cough; sinusitis; otitis; Infection of the respiratory system, in the symptomatic complex of which there is a cough.
Primary
Eurespal

Approved Use

Indications: Rinofaringitis, laryngitis — otitis, sinusitis — rinotraheobronhit — bronchitis — bronchial asthma (maintenance therapy) respiratory effects in measles, pertussis and influenza (syrup).
Primary
Eurespal

Approved Use

Indications: Rinofaringitis, laryngitis — otitis, sinusitis — rinotraheobronhit — bronchitis — bronchial asthma (maintenance therapy) respiratory effects in measles, pertussis and influenza (syrup).
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
206 ng/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
329.35 ng/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
381.58 ng/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FED
1034.09 ng/mL
80 mg 2 times / day multiple, oral
dose: 80 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
6.03 μg × h/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
6.73 μg × h/mL
80 mg single, intravenous
dose: 80 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
10259.9 ng × h/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
9576.89 ng × h/mL
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FED
11208.73 ng × h/mL
80 mg 2 times / day multiple, oral
dose: 80 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
16 h
80 mg single, oral
dose: 80 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
14 h
80 mg single, intravenous
dose: 80 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
FENSPIRIDE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
Doses

Doses

DosePopulationAdverse events​
80 mg 2 times / day multiple, oral
Recommended
Dose: 80 mg, 2 times / day
Route: oral
Route: multiple
Dose: 80 mg, 2 times / day
Sources:
unhealthy, ADULT
Health Status: unhealthy
Age Group: ADULT
Sex: M+F
Food Status: UNKNOWN
Sources:
Disc. AE: Allergy...
AEs leading to
discontinuation/dose reduction:
Allergy (4%)
Sources:
AEs

AEs

AESignificanceDosePopulation
Allergy 4%
Disc. AE
80 mg 2 times / day multiple, oral
Recommended
Dose: 80 mg, 2 times / day
Route: oral
Route: multiple
Dose: 80 mg, 2 times / day
Sources:
unhealthy, ADULT
Health Status: unhealthy
Age Group: ADULT
Sex: M+F
Food Status: UNKNOWN
Sources:
PubMed

PubMed

TitleDatePubMed
[Efficiency of combination therapy for acute otitis media].
2010
[Pathogenetic correction of postoperative inflammation in modern rhinosurgery].
2010
[Experience in using erespal in the treatment of acute respiratory diseases in children in outpatient practice].
2010
[Pathogenetic therapy for inflammatory diseases of the middle ear].
2009
[Experience with fenspiride in a rhinosurgeon's practice].
2009
[Hearing rehabilitation in patients with acute otitis media treated with fenspiride].
2008
[Clinicofunctional condition and quality of life in patients with chronic obstructive pulmonary disease before and after outpatient treatment with fenspiride].
2008
[The role of expired air moisture condensate in assessment of pulmonary inflammation in patients with chronic obstructive pulmonary disease].
2008
[New pharmaceuticals in treatment of chronic dust bronchitis].
2007
[The effectiveness of fenspiride in the treatment of patients with chronic obstructive pulmonary disease].
2007
[Anti-inflammatory therapy of paranasal sinuses diseases].
2006
Comparison of fenspiride with beclomethasone as adjunctive anti-inflammatory treatment in patients with chronic obstructive pulmonary disease.
2006
[Erespal in combined therapy of acute rhinosinusitis].
2006
[The effect of fenspiride on the number of exacerbations and the time of first exacerbation in patients with chronic bronchitis].
2005-08
[Fenspiride in patients with acute bronchitis].
2005-07
[Usefulness of fenspiride in the treatment of acute otitis media in children].
2005-06
Efficacy of supplemental anti-inflammatory therapy with fenspiride in chronic obstructive and nonobstructive bronchitis.
2005
[Potential of antiinflammatory therapy in patients with chronic obstructive lung disease].
2005
[Effectiveness and tolerance of fenspiride treatment in chronic sinusitis. Results of the Polish multicenter study].
2005
[Fenspiride-a new alternative on the therapy of obstructive lung disease].
2004-01-02
[Acute intoxication with fenspiride].
2004
[Erespal effectiveness in exudative otitis media].
2003
[ENT inflammation and importance of fenspiride].
2002-09
[Bronchial inflammation during chronic bronchitis, importance of fenspiride].
2002-09
Detection of fenspiride and identification of in vivo metabolites in horse body fluids by capillary gas chromatography-mass spectrometry: administration, biotransformation and urinary excretion after a single oral dose.
2002-02-05
[Experience in treating patients with chronic obstructive bronchitis with fenspirid].
2002
[Effectiveness of fenspiride in patients with chronic obstructive bronchitis].
2001
Patents

Sample Use Guides

Tablets: One tablet (80 mg) twice-thrice a day. The maximum dose for a daily intake is 240 mg (3 tablets).Syrup: For 45-90 milliliters (3-6 tablespoons, respectively) per day.
Route of Administration: Oral
In Vitro Use Guide
Curator's Comment: Fenspiride (10(-7)-10(-5) M) inhibited the histamine H1 receptor-induced Ca2+ increase in a lung epithelial cell line. Fenspiride (10(-5) M) abolished both phases of histamine-induced arachidonic acid release. https://www.ncbi.nlm.nih.gov/pubmed/9652346
Fenspiride (10(-6) to 10(-4) M) inhibited the nonadrenergic, noncholinergic (NANC) component of the contraction of the guinea-pig isolated main bronchus induced by EFS. Fenspiride significantly affected contractions induced by exogenously added substance P or [Nle10]-NKA(4-10) only at concentrations higher than 10(-3) M. In the guinea-pig perfused lung, fenspiride inhibited low pH- but not capsaicin-evoked release of CGRP. At higher concentrations (10(-4) M to 3x10(-4) M) fenspiride exhibited a significant inhibitory effect both on the cholinergic component of contractile response induced by EFS in the guinea-pig isolated main bronchus and on exogenously added acetylcholine.
Name Type Language
NAT-333
Preferred Name English
FENSPIRIDE HYDROCHLORIDE
MART.   MI   USAN   WHO-DD  
USAN  
Official Name English
NSC-757825
Code English
FENSPIRIDE HYDROCHLORIDE [MART.]
Common Name English
Fenspiride hydrochloride [WHO-DD]
Common Name English
FENSPIRIDE HYDROCHLORIDE [MI]
Common Name English
FENSPIRIDE HCL
Common Name English
FENSPIRIDE HYDROCHLORIDE [USAN]
Common Name English
NDR-5998A
Code English
8-Phenethyl-1-oxa-3,8-diazaspiro[4.5]decan-2-one monohydrochloride
Systematic Name English
1-OXA-3,8-DIAZASPIRO(4,5)DECAN-2-ONE, 8-(2-PHENYLETHYL)-, MONOHYDROCHLORIDE
Common Name English
Classification Tree Code System Code
NCI_THESAURUS C257
Created by admin on Mon Mar 31 17:33:35 GMT 2025 , Edited by admin on Mon Mar 31 17:33:35 GMT 2025
Code System Code Type Description
ChEMBL
CHEMBL576127
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PRIMARY
FDA UNII
832NBX878V
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PRIMARY
PUBCHEM
68626
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PRIMARY
DRUG BANK
DBSALT002867
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PRIMARY
RXCUI
236281
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PRIMARY RxNorm
CAS
5053-08-7
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PRIMARY
NSC
757825
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PRIMARY
MERCK INDEX
m5296
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PRIMARY Merck Index
SMS_ID
100000091351
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PRIMARY
ECHA (EC/EINECS)
225-752-9
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PRIMARY
EPA CompTox
DTXSID3045770
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PRIMARY
MESH
C084775
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PRIMARY
NCI_THESAURUS
C80551
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PRIMARY
EVMPD
SUB02128MIG
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PRIMARY