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Details

Stereochemistry ACHIRAL
Molecular Formula C22H30N6O4S.HNO3
Molecular Weight 537.589
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of SILDENAFIL NITRATE

SMILES

O[N+]([O-])=O.CCCC1=NN(C)C2=C1N=C(NC2=O)C3=CC(=CC=C3OCC)S(=O)(=O)N4CCN(C)CC4

InChI

InChIKey=RBQNFEVGNSBKSU-UHFFFAOYSA-N
InChI=1S/C22H30N6O4S.HNO3/c1-5-7-17-19-20(27(4)25-17)22(29)24-21(23-19)16-14-15(8-9-18(16)32-6-2)33(30,31)28-12-10-26(3)11-13-28;2-1(3)4/h8-9,14H,5-7,10-13H2,1-4H3,(H,23,24,29);(H,2,3,4)

HIDE SMILES / InChI
Sildenafil (Viagra, Revatio) is a PDE5 inhibitor which was approved by FDA for the treatment of erectile disfunction and adults with pulmonary arterial hypertension. Upon administration sildenafil inhibits PDE5 and results in elevated level of cyclic guanosine monophosphate and smooth muscle relaxation.

CNS Activity

Curator's Comment: CNS activity was observed on rats.

Originator

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
3.5 nM [IC50]
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
VIAGRA

Approved Use

VIAGRA is a phosphodiesterase-5 (PDE5) inhibitor indicated for the treatment of erectile dysfunction.

Launch Date

1998
Primary
REVATIO

Approved Use

REVATIO is a phosphodiesterase-5 (PDE-5) inhibitor indicated for the treatment of pulmonary arterial hypertension (PAH) (WHO Group I) in adults to improve exercise ability and delay clinical worsening.

Launch Date

2005
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
159 ng/mL
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
SILDENAFIL plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
530 ng × h/mL
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
SILDENAFIL plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
4.07 h
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
SILDENAFIL plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
4 h
100 mg single, oral
dose: 100 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
SILDENAFIL plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
Funbound

Funbound

ValueDoseCo-administeredAnalytePopulation
4%
100 mg single, oral
dose: 100 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
SILDENAFIL plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
2000 mg single, oral
Overdose
Dose: 2000 mg
Route: oral
Route: single
Dose: 2000 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Disc. AE: Flushing, Headache...
AEs leading to
discontinuation/dose reduction:
Flushing
Headache
Tachycardia (mild)
Sources: Page: p.2
2400 mg single, oral
Overdose
Dose: 2400 mg
Route: oral
Route: single
Dose: 2400 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Disc. AE: Visual field defect...
AEs leading to
discontinuation/dose reduction:
Visual field defect
Sources: Page: p.2
250 mg single, oral
Overdose
Dose: 250 mg
Route: oral
Route: single
Dose: 250 mg
Sources: Page: p.258
unhealthy, 45
n = 1
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 45
Sex: M
Population Size: 1
Sources: Page: p.258
Disc. AE: Rhabdomyolysis, Visual disturbance NOS...
AEs leading to
discontinuation/dose reduction:
Rhabdomyolysis
Visual disturbance NOS
Sources: Page: p.258
80 mg 3 times / day multiple, oral
Highest studied dose
Dose: 80 mg, 3 times / day
Route: oral
Route: multiple
Dose: 80 mg, 3 times / day
Sources: Page: p.1278
unhealthy, 47.5
n = 135
Health Status: unhealthy
Condition: Pulmonary arterial hypertension
Age Group: 47.5
Sex: M+F
Population Size: 135
Sources: Page: p.1278
6.5 g single, oral
Overdose
Dose: 6.5 g
Route: oral
Route: single
Dose: 6.5 g
Sources: Page: p.1
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources: Page: p.1
Disc. AE: Vomiting, Blurred vision...
AEs leading to
discontinuation/dose reduction:
Vomiting (severe)
Blurred vision
Sinus tachycardia
Sources: Page: p.1
600 mg single, oral
Overdose
Dose: 600 mg
Route: oral
Route: single
Dose: 600 mg
Sources:
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources:
Disc. AE: Cardiomegaly, Fibrosis myocardial...
AEs leading to
discontinuation/dose reduction:
Cardiomegaly (grade 5)
Fibrosis myocardial (grade 5)
Sources:
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Disc. AE: Nausea, Vomiting...
AEs leading to
discontinuation/dose reduction:
Nausea (0.32%)
Vomiting (0.32%)
Leg pain (0.32%)
Backache (0.32%)
Intermittent headache (0.32%)
Dyspepsia (0.32%)
Headache (0.32%)
Sources: Page: p.1400
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1403
unhealthy, 60
n = 163
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 163
Sources: Page: p.1403
Disc. AE: Headache, Flushing...
AEs leading to
discontinuation/dose reduction:
Headache (0.61%)
Flushing (0.61%)
Sources: Page: p.1403
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1401
unhealthy, 60
n = 225
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 225
Sources: Page: p.1401
Disc. AE: Headache, Flushing...
AEs leading to
discontinuation/dose reduction:
Headache (0.9%)
Flushing (0.44%)
Blurred vision (0.44%)
Groin pain (1.3%)
Sources: Page: p.1401
400 mg single, oral
Overdose
Dose: 400 mg
Route: oral
Route: single
Dose: 400 mg
Sources: Page: p.1,2
unhealthy, 67
n = 1
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 67
Sex: M
Population Size: 1
Sources: Page: p.1,2
Disc. AE: Acute kidney injury...
AEs leading to
discontinuation/dose reduction:
Acute kidney injury
Sources: Page: p.1,2
AEs

AEs

AESignificanceDosePopulation
Flushing Disc. AE
2000 mg single, oral
Overdose
Dose: 2000 mg
Route: oral
Route: single
Dose: 2000 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Headache Disc. AE
2000 mg single, oral
Overdose
Dose: 2000 mg
Route: oral
Route: single
Dose: 2000 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Tachycardia mild
Disc. AE
2000 mg single, oral
Overdose
Dose: 2000 mg
Route: oral
Route: single
Dose: 2000 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Visual field defect Disc. AE
2400 mg single, oral
Overdose
Dose: 2400 mg
Route: oral
Route: single
Dose: 2400 mg
Sources: Page: p.2
healthy, 33
n = 1
Health Status: healthy
Age Group: 33
Sex: M
Population Size: 1
Sources: Page: p.2
Rhabdomyolysis Disc. AE
250 mg single, oral
Overdose
Dose: 250 mg
Route: oral
Route: single
Dose: 250 mg
Sources: Page: p.258
unhealthy, 45
n = 1
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 45
Sex: M
Population Size: 1
Sources: Page: p.258
Visual disturbance NOS Disc. AE
250 mg single, oral
Overdose
Dose: 250 mg
Route: oral
Route: single
Dose: 250 mg
Sources: Page: p.258
unhealthy, 45
n = 1
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 45
Sex: M
Population Size: 1
Sources: Page: p.258
Blurred vision Disc. AE
6.5 g single, oral
Overdose
Dose: 6.5 g
Route: oral
Route: single
Dose: 6.5 g
Sources: Page: p.1
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources: Page: p.1
Sinus tachycardia Disc. AE
6.5 g single, oral
Overdose
Dose: 6.5 g
Route: oral
Route: single
Dose: 6.5 g
Sources: Page: p.1
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources: Page: p.1
Vomiting severe
Disc. AE
6.5 g single, oral
Overdose
Dose: 6.5 g
Route: oral
Route: single
Dose: 6.5 g
Sources: Page: p.1
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources: Page: p.1
Cardiomegaly grade 5
Disc. AE
600 mg single, oral
Overdose
Dose: 600 mg
Route: oral
Route: single
Dose: 600 mg
Sources:
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources:
Fibrosis myocardial grade 5
Disc. AE
600 mg single, oral
Overdose
Dose: 600 mg
Route: oral
Route: single
Dose: 600 mg
Sources:
healthy, 56
n = 1
Health Status: healthy
Age Group: 56
Sex: M
Population Size: 1
Sources:
Backache 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Dyspepsia 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Headache 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Intermittent headache 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Leg pain 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Nausea 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Vomiting 0.32%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1400
unhealthy, 58
n = 316
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 58
Sex: M
Population Size: 316
Sources: Page: p.1400
Flushing 0.61%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1403
unhealthy, 60
n = 163
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 163
Sources: Page: p.1403
Headache 0.61%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1403
unhealthy, 60
n = 163
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 163
Sources: Page: p.1403
Blurred vision 0.44%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1401
unhealthy, 60
n = 225
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 225
Sources: Page: p.1401
Flushing 0.44%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1401
unhealthy, 60
n = 225
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 225
Sources: Page: p.1401
Headache 0.9%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1401
unhealthy, 60
n = 225
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 225
Sources: Page: p.1401
Groin pain 1.3%
Disc. AE
100 mg 1 times / day multiple, oral (max)
Recommended
Dose: 100 mg, 1 times / day
Route: oral
Route: multiple
Dose: 100 mg, 1 times / day
Sources: Page: p.1401
unhealthy, 60
n = 225
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 60
Sex: M
Population Size: 225
Sources: Page: p.1401
Acute kidney injury Disc. AE
400 mg single, oral
Overdose
Dose: 400 mg
Route: oral
Route: single
Dose: 400 mg
Sources: Page: p.1,2
unhealthy, 67
n = 1
Health Status: unhealthy
Condition: Erectile dysfunction
Age Group: 67
Sex: M
Population Size: 1
Sources: Page: p.1,2
PubMed

PubMed

TitleDatePubMed
A risk-benefit assessment of sildenafil in the treatment of erectile dysfunction.
2001
'Viagra effect' - influence of mass media on patient behavior.
2001
Strategies for the treatment of antidepressant-related sexual dysfunction.
2001
Safe use of sildenafil in patients with coronary artery disease.
2001 Apr
Sildenafil citrate for penile hemodynamic determination: an alternative to intracavernosal agents in Doppler ultrasound evaluation of erectile dysfunction.
2001 Apr
Efficacy and safety of sildenafil citrate in the treatment of men with mild to moderate erectile dysfunction.
2001 Apr
Intracavernosal injection of sildenafil citrate: misapplication of the drug.
2001 Apr
Assessment of as needed use of pharmacotherapy and the pause-squeeze technique in premature ejaculation.
2001 Feb
Oral alpha adrenoceptor blockade as a treatment of erectile dysfunction.
2001 Feb
Central effects of sildenafil (Viagra) on auditory selective attention and verbal recognition memory in humans: a study with event-related brain potentials.
2001 Feb
Sildenafil citrate, a selective phosphodiesterase type 5 inhibitor: urologic and cardiovascular implications.
2001 Feb
Changes in ED therapy in the Viagra era.
2001 Feb
Phosphodiesterase isoenzymes as pharmacological targets in the treatment of male erectile dysfunction.
2001 Feb
Intracerebral haemorrhage associated with sildenafil citrate.
2001 Feb
I've heard of an herbal alternative to Viagra for impotence. Does it work and is it safe?
2001 Feb
Efficacy of oral sildenafil in the treatment of erectile dysfunction in diabetic men with positive response to intracavernosal injection of alprostadil.
2001 Feb
Sildenafil citrate (VIAGRA) improves erectile function in elderly patients with erectile dysfunction: a subgroup analysis.
2001 Feb
Determination of sildenafil citrate in plasma by high-performance liquid chromatography and a case for the potential interaction of grapefruit juice with sildenafil citrate.
2001 Feb
Interposition sural nerve grafting during radical retropubic prostatectomy.
2001 Feb
Sildenafil modulates hemodynamics and pulmonary gas exchange.
2001 Feb
Viagra for impotence of pulmonary vasodilator therapy?
2001 Feb
[Endocrinology 1999-2000].
2001 Feb 15
[Research on impotence and marketing].
2001 Feb 20
Cost-effectiveness of sildenafil.
2001 Feb 6
Cost-effectiveness of sildenafil.
2001 Feb 6
The role of nitric oxide in penile erection.
2001 Jan
Emergency sperm extraction for transient erectile dysfunction prior to assisted conception.
2001 Jan
Sildenafil citrate: a therapeutic update.
2001 Jan
Intracavernosal injection therapy. Does it still have a role in erectile dysfunction?
2001 Jan
Effect of sildenafil in patients with erectile dysfunction taking antihypertensive therapy. Sildenafil Study Group.
2001 Jan
Sexual aspects of headache. How sexual function relates to headaches and their causes and treatment.
2001 Jan
pH-mediated field-amplified sample stacking of pharmaceutical cations in high-ionic strength samples.
2001 Jan
[Prescribing of sildenafil by national insurance program physicians. What basic sexual medicine qualification is required?].
2001 Jan 11
[Erectile dysfunction in coronary heart disease. No fear about the blue pill].
2001 Jan 18
[Paths to sexual satisfaction. What will stimulate the tired man?].
2001 Jan 18
[Drug treatment of erection disorders in patients with cardiovascular disease].
2001 Jan 27
Relapse prevention strategies and techniques with erectile dysfunction.
2001 Jan-Feb
Viagra: a three-year sexual revolution and the need to recognise its role within the NHS.
2001 Mar
Three-year update of sildenafil citrate (Viagra) efficacy and safety.
2001 Mar
Initial uptake in use of sildenafil in general practice.
2001 Mar
Identification of the cytochrome P450 enzymes involved in the N-demethylation of sildenafil.
2001 Mar
Alternatives to Viagra.
2001 Mar
Is brachytherapy comparable with radical prostatectomy and external-beam radiation for clinically localized prostate cancer?
2001 Mar
Sildenafil citrate and sperm function.
2001 Mar
Is the sildenafil product information adequate to facilitate informed therapeutic decisions?
2001 Mar
Comparison of FDA reports of patient deaths associated with sildenafil and with injectable alprostadil.
2001 Mar
Phosphodiesterase inhibitor-mediated potentiation of adenovirus delivery to myocardium.
2001 Mar
[Side effects of sildenafil: findings from two years practical experience].
2001 Mar 17
Subjective visual halos after sildenafil (Viagra) administration: Electroretinographic evaluation.
2001 May
FIA of sildenafil citrate using UV-detection.
2001 May
Patents

Sample Use Guides

Erectile disfunction: For most patients, the recommended dose is 50 mg taken, as needed, approximately 1 hour before sexual activity. Pulmonary arterial hypertension: 5 mg or 20 mg three times a day, 46 hours apart (oral); 2.5 mg or 10 mg three times a day administered as an intravenous bolus injection.
Route of Administration: Other
In Vitro Use Guide
Sources: www.ncbi.nlm.nih.gov/pubmed/20590607
Human bladder samples were treated with sildenafil (10 nM–30 µM) to test the ability of the drug to inhibit contraction.
Name Type Language
SILDENAFIL NITRATE
Common Name English
7H-PYRAZOLO(4,3-D)PYRIMIDIN-7-ONE, 5-(2-ETHOXY-5-((4-METHYL-1-PIPERAZINYL)SULFONYL)PHENYL)-1,6-DIHYDRO-1-METHYL-3-PROPYL-, NITRATE (1:1)
Systematic Name English
PIPERAZINE, 1-((3-(4,7-DIHYDRO-1-METHYL-7-OXO-3-PROPYL-1H-PYRAZOLO(4,3-D)PYRIMIDIN-5-YL)-4-ETHOXYPHENYL)SULFONYL)-4-METHYL-, MONONITRATE
Systematic Name English
NCX-911
Code English
Code System Code Type Description
CAS
252951-59-0
Created by admin on Sat Dec 16 10:54:43 GMT 2023 , Edited by admin on Sat Dec 16 10:54:43 GMT 2023
PRIMARY
PUBCHEM
135484084
Created by admin on Sat Dec 16 10:54:43 GMT 2023 , Edited by admin on Sat Dec 16 10:54:43 GMT 2023
PRIMARY
FDA UNII
8B699ZY1CH
Created by admin on Sat Dec 16 10:54:43 GMT 2023 , Edited by admin on Sat Dec 16 10:54:43 GMT 2023
PRIMARY