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

Details

Stereochemistry ACHIRAL
Molecular Formula C13H18N4O3
Molecular Weight 278.307
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of PENTOXIFYLLINE

SMILES

CN1C=NC2=C1C(=O)N(CCCCC(C)=O)C(=O)N2C

InChI

InChIKey=BYPFEZZEUUWMEJ-UHFFFAOYSA-N
InChI=1S/C13H18N4O3/c1-9(18)6-4-5-7-17-12(19)10-11(14-8-15(10)2)16(3)13(17)20/h8H,4-7H2,1-3H3

HIDE SMILES / InChI
Pentoxil (Pentoxifylline Extended-release Tablets, USP) is indicated for the treatment of patients with intermittent claudication based on chronic occlusive arterial disease of the limbs. Pentoxil can improve function and symptoms but is not intended to replace more definitive therapy, such as surgical bypass, or removal of arterial obstructions when treating peripheral vascular disease. Pentoxifylline and its metabolites improve the flow properties of blood by decreasing its viscosity. In patients with chronic peripheral arterial disease, this increases blood flow to the affected microcirculation and enhances tissue oxygenation. The precise mode of action of pentoxifylline and the sequence of events leading to clinical improvement are still to be defined. Pentoxifylline inhibits erythrocyte phosphodiesterase, resulting in an increase in erythrocyte cAMP activity. Subsequently, the erythrocyte membrane becomes more resistant to deformity. Along with erythrocyte activity, pentoxifylline also decreases blood viscosity by reducing plasma fibrinogen concentrations and increasing fibrinolytic activity. It is also a non-selective adenosine receptor antagonist. Pentoxifylline administration has been shown to produce dose-related hemorrheologic effects, lowering blood viscosity, and improving erythrocyte flexibility. Pentoxifylline has been shown to increase leukocyte deformability and to inhibit neutrophil adhesion and activation. Tissue oxygen levels have been shown to be significantly increased by therapeutic doses of pentoxifylline in patients with peripheral arterial disease. Clinical trials were conducted using either extended-release pentoxifylline tablets for up to 60 weeks or immediate-release pentoxifylline capsules for up to 24 weeks. Dosage ranges in the tablet studies were 400 mg bid to tid and in the capsule studies, 200-400 mg tid. The incidence of adverse reactions was higher in the capsule studies (where dose related increases were seen in digestive and nervous system side effects) than in the tablet studies. Studies with the capsule include domestic experience, whereas studies with the extended-release tablets were conducted outside the U.S.

CNS Activity

Curator's Comment: Pentoxifylline readily crosses the blood-brain barrier, so systemically administered drug might reduce both circulating and brain levels of pro-inflammatory cytokines

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
PENTOXIL

Approved Use

INDICATIONS & USAGE Pentoxifylline extended-release tablets are indicated for the treatment of patients with intermittent claudication on the basis of chronic occlusive arterial disease of the limbs. Pentoxifylline can improve function and symptoms but is not intended to replace more definitive therapy, such as surgical bypass, or removal of arterial obstructions when treating peripheral vascular disease.

Launch Date

9.2283837E11
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
1607 μg/mL
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
272 ng/mL
100 mg single, oral
dose: 100 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
683 ng/mL
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
719 ng/mL
600 mg single, oral
dose: 600 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
1228 ng × h/mL
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
193 ng × h/mL
100 mg single, oral
dose: 100 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
380 ng × h/mL
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
4842 ng × h/mL
600 mg single, oral
dose: 600 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
0.84 h
400 mg single, oral
dose: 400 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
0.48 h
100 mg single, oral
dose: 100 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
0.39 h
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
PENTOXIFYLLINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
Doses

Doses

DosePopulationAdverse events​
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Disc. AE: Flushing, Hypotension...
AEs leading to
discontinuation/dose reduction:
Flushing (44 patients)
Hypotension (44 patients)
Convulsions (44 patients)
Somnolence (44 patients)
Loss of consciousness (44 patients)
Fever (44 patients)
Agitation (44 patients)
Sources:
AEs

AEs

AESignificanceDosePopulation
Agitation 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Convulsions 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Fever 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Flushing 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Hypotension 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Loss of consciousness 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Somnolence 44 patients
Disc. AE
80 mg/kg single, oral
Overdose
Dose: 80 mg/kg
Route: oral
Route: single
Dose: 80 mg/kg
Sources:
unhealthy, adult and children
n = 44
Health Status: unhealthy
Condition: peripheral vascular disease
Age Group: adult and children
Sex: unknown
Population Size: 44
Sources:
Overview

Overview

CYP3A4CYP2C9CYP2D6hERG

OverviewOther

Other InhibitorOther SubstrateOther Inducer

Drug as victim

Drug as victim

TargetModalityActivityMetaboliteClinical evidence
yes
likely (co-administration study)
Comment: Concomitant administration of strong CYP1A2 inhibitors (including e.g. ciprofloxacin or fluvoxamine) may increase the exposure to pentoxifylline
Page: 7.0
Sourcing

Sourcing

Vendor/AggregatorIDURL
PubMed

PubMed

TitleDatePubMed
Immunotherapy of inflammatory demyelinating diseases of the central nervous system.
2001
The alveolar septal thickness and type II pneumocytes number in irradiated lungs, time expression and the effect of pentoxifylline.
2001
Managing cancer-related anorexia/cachexia.
2001
The efficacy of medication on tinnitus due to acute acoustic trauma.
2001
New treatment options in intermittent claudication: the US experience.
2001 Apr
Cilostazol: a novel treatment option in intermittent claudication.
2001 Apr
A new treatment for peripheral arterial disease.
2001 Apr
Methylxanthine sensitization of human colon cancer cells to 186Re-labeled monoclonal antibody.
2001 Apr
Pentoxifylline reduces coronary leukocyte accumulation early in reperfusion after cold ischemia.
2001 Apr
Value of the hamster oocyte test and computerised measurements of sperm motility in predicting if four or more viable embryos will be obtained in an IVF cycle.
2001 Apr
Matrix metalloproteinase inhibitors cause cell cycle arrest and apoptosis in glomerular mesangial cells.
2001 Apr
Prevention of compartment syndrome in dorsal root ganglia caused by exposure to nucleus pulposus.
2001 Apr 15
Intracellular pool of IL-10 receptors in specific granules of human neutrophils: differential mobilization by proinflammatory mediators.
2001 Apr 15
Administration of pentoxifylline during allergen sensitization dissociates pulmonary allergic inflammation from airway hyperresponsiveness.
2001 Aug 1
Pentoxifylline treatment of mice with chronic pulmonary tuberculosis accelerates the development of destructive pathology.
2001 Feb
Is cilostazol more effective than pentoxifylline in the treatment of symptoms of intermittent claudication?
2001 Feb
[Infusion therapy with pentoxifylline and/or hydroxyethyl starch].
2001 Feb 23
Beneficial effects of pentoxifylline in patients with idiopathic dilated cardiomyopathy treated with angiotensin-converting enzyme inhibitors and carvedilol: results of a randomized study.
2001 Feb 27
Cytokine-mediated suppression of cytochrome P450 1A1 in Hepa-1c1c7 cells by pokeweed mitogen.
2001 Feb 28
May pentoxifylline improve lung function after one-lung flooding?
2001 Jan
[Parkinsonism or Parkinson's disease unmasked by pentoxifylline?].
2001 Jan
Integrating anti-tumor necrosis factor therapy in inflammatory bowel disease: current and future perspectives.
2001 Jul
Ibudilast attenuates astrocyte apoptosis via cyclic GMP signalling pathway in an in vitro reperfusion model.
2001 Jul
Renal failure, anaemia, cytokines and inflammation.
2001 Jul
In vivo downregulation of T helper cell 1 immune responses reduces atherogenesis in apolipoprotein E-knockout mice.
2001 Jul 10
Pentoxifylline improves in vitro fertilization and subsequent development of bovine oocytes.
2001 Jul 15
Management of patients with severe oral mucosal disease.
2001 Jul-Aug
A redox-regulated tyrosine phosphorylation cascade in rat spermatozoa.
2001 Jul-Aug
Effect of pentoxifylline on nitrogen balance and 3-methylhistidine excretion in parenterally fed endotoxemic rats.
2001 Jul-Aug
Medical management of peripheral arterial disease.
2001 Jul-Aug
[Beneficial effects of pentoxifylline in patients with idiopathic dilated cardiomyopathy treated with angiotensin-converting enzyme inhibitors and carvedilol. Results of a randomised study].
2001 Jun
Improved response of colon cancer xenografts to radioimmunotherapy with pentoxifylline treatment.
2001 Jun
Pentoxifylline rescue preserves lung function in isolated canine lungs injured with phorbol myristate acetate.
2001 Jun
Therapeutic effects of Vascupump treatment patients with Fontaine Stage II B arteriopathy.
2001 Jun
Countervailing influence of tumor necrosis factor-alpha and nitric oxide in endotoxemia.
2001 Jun
Analysis of the cilostazol safety database.
2001 Jun 28
Comparative effects of cilostazol and other therapies for intermittent claudication.
2001 Jun 28
Intermittent claudication: effective medical management of a common circulatory problem.
2001 Jun 28
The effects of pentoxifylline treatment on bacterial translocation after hemorrhagic shock in rats.
2001 Mar
Inhibition of human CYP1A2 activity in vitro by methylxanthines: potent competitive inhibition by 8-phenyltheophylline.
2001 Mar
[The effect of pentoxifylline on the deformability of erythrocytes in erythrocyte concentrates in additive solution].
2001 Mar
Necrobiosis lipoidica. Indolent plaques may signal diabetes.
2001 Mar
Pentoxifylline inhibits the synthesis and IFN-gamma-inducing activity of IL-18.
2001 May
Controlled perfusion of the transplanted lung.
2001 May
Influence of prophylactic use of pentoxifylline on postoperative organ function in elderly cardiac surgery patients.
2001 May
Modulation of human peripheral blood mononuclear cell activation by the combination of leflunomide and pentoxifylline.
2001 May
A toast to pentoxifylline.
2001 May
A comparison of heat-induced hyperactivation in patients' sperm after colloid or pentoxifylline wash methods.
2001 May
Regulation of TNFalpha and interleukin-10 production by prostaglandins I(2) and E(2): studies with prostaglandin receptor-deficient mice and prostaglandin E-receptor subtype-selective synthetic agonists.
2001 May 1
Pentoxifylline: wonder drug?
2001 May-Jun
Patents

Sample Use Guides

The usual dosage of Pentoxil (Pentoxifylline Extended-release Tablets, USP) in extended-release tablet form is one tablet (400 mg) three times a day with meals. While the effect of Pentoxil may be seen within 2 to 4 weeks, it is recommended that treatment be continued for at least 8 weeks. Efficacy has been demonstrated in double-blind clinical studies of 6 months duration.
Route of Administration: Oral
The proliferation rate of the cells treated with 1 mM Pentoxifylline (PTX) significantly decreased compared with that of the control in T6 cells (78.3 ± 6.03% at 12 h, 61.0 ± 7.55% at 24 h, and 44.7 ± 2.08% at 48 h, p < 0.05). PTX (1 mM) also decreased the fraction of the hepatic stellate cells (HSC) population in the S and G2/M-phases of the cell cycle in primary activated rat HSCs. The Raf-1 inhibitor GW5074 and the ERK inhibitor U0126 had inhibitory effects that were similar to those of PTX on HSC proliferation. In addition, PTX inhibited the phosphorylation of Raf-1 (p-Raf-1) and ERK (p-ERK) in a dose- and time-dependent manner in HSCs.
Name Type Language
PENTOXIFYLLINE
EP   INN   JAN   MART.   MI   ORANGE BOOK   USAN   USP   USP-RS   VANDF   WHO-DD  
INN   USAN  
Official Name English
PENTOXIFYLLINE [ORANGE BOOK]
Common Name English
PENTOXIFYLLINE [MART.]
Common Name English
NSC-637086
Code English
OXYPENTIFYLLINE
Common Name English
BL-191
Code English
TRENTAL
Brand Name English
PENTOXIFYLLINE [EP MONOGRAPH]
Common Name English
PENTOXIFYLLINE [VANDF]
Common Name English
PENTOXIFYLLINE [JAN]
Common Name English
PENTOXIL
Brand Name English
PENTOXIFYLLINE [USP-RS]
Common Name English
pentoxifylline [INN]
Common Name English
C04AD03
Code English
1H-PURINE-2,6-DIONE, 3,7-DIHYDRO-3,7-DIMETHYL-1-(5-OXOHEXYL)-
Systematic Name English
NSC-758481
Code English
PENTOXIPHYLLIN
Common Name English
PENTOXIFYLLINE [USP MONOGRAPH]
Common Name English
Pentoxifylline [WHO-DD]
Common Name English
PENTOXIFYLLINE [MI]
Common Name English
BL 191
Code English
1-(5-Oxohexyl)theobromine
Systematic Name English
PENTOXIFYLLINE [USAN]
Common Name English
Classification Tree Code System Code
FDA ORPHAN DRUG 369712
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
WHO-VATC QC04AD03
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
NDF-RT N0000009065
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
NCI_THESAURUS C744
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
NCI_THESAURUS C1327
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
NCI_THESAURUS C221
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
LIVERTOX NBK548672
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
NDF-RT N0000175895
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
WHO-ATC C04AD03
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
Code System Code Type Description
NSC
637086
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
INN
3309
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
LACTMED
Pentoxifylline
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
DAILYMED
SD6QCT3TSU
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
FDA UNII
SD6QCT3TSU
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
RS_ITEM_NUM
1508901
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
MERCK INDEX
m8519
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY Merck Index
NSC
758481
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
MESH
D010431
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
CAS
6493-05-6
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
EVMPD
SUB09705MIG
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
PUBCHEM
4740
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
RXCUI
8013
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY RxNorm
DRUG CENTRAL
2099
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
DRUG BANK
DB00806
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
IUPHAR
7095
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
ChEMBL
CHEMBL628
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
EPA CompTox
DTXSID7023437
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
NCI_THESAURUS
C733
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
WIKIPEDIA
PENTOXIFYLLINE
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY
ECHA (EC/EINECS)
229-374-5
Created by admin on Fri Dec 15 15:33:57 UTC 2023 , Edited by admin on Fri Dec 15 15:33:57 UTC 2023
PRIMARY
SMS_ID
100000091628
Created by admin on Fri Dec 15 15:33:58 UTC 2023 , Edited by admin on Fri Dec 15 15:33:58 UTC 2023
PRIMARY