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Drug

Sildenafil

Approved · EMA
Emerging researchLate-stage developmentCooling momentum
Also known as Liqrev, Revatio, Viagra, Vybrique+3 more

Liqrev, Revatio, Viagra, Vybrique, Sildenafilo, 1-((3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4-ethoxyphenyl)sulfonyl)-4-methylpiperazine, Sildenafil Citrate.

7
Research papers
16
Active clinical trials
5
Regulatory events
Latest activity
beta

Recent clinical, regulatory, research and industry developments relating to this drug.

An Early Phase 1 Study of Asciminib With or Without Sildenafil for Brain Tumors

Clinical trial2026-07-01Results expected Q1 2028 · ClinicalTrials.gov

The Role of Phosphodiesterase Inhibitors in CF Lung Disease

Clinical trial2026-05-14Results posted · ClinicalTrials.gov

Approval: Mysildecard (EMA)

Regulatory2016-09-15EMA

An open-label study to evaluate sildenafil for the treatment of lymphatic malformations.

Research2014-03-20Journal of the American Academy of Dermatology

Approval: Sildenafil Actavis (EMA)

Regulatory2009-12-10EMA

Approval: Revatio (EMA)

Regulatory2005-10-28EMA

Profile

Identifiers & mechanism

Canonical identifiers, marketed brand names and mechanism, resolved across RxNorm, ChEMBL and ATC.

Canonical name
Sildenafil
Aliases & brands
LiqrevRevatioViagraVybriqueSildenafilo1-((3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4-ethoxyphenyl)sulfonyl)-4-methylpiperazineSildenafil Citrate
RxNorm CUI
136411
ChEMBL ID
CHEMBL192
UNII
3M7OB98Y7H
Regulatory jurisdictions
emamhra

Regulatory timeline

5 events

The complete regulatory record, grouped by authority — approvals, safety advisories and label changes. Each authority shows its most recent events; expand one to read its full history.

Earliest approval
1998-09-13
Latest approval
2016-09-15
Authorities
EMA · MHRA
Total events
5
emaEuropean Medicines Agency· 4 events
2016-09-15Approval
Approval: Mysildecard (EMA)
Indication: AdultsTreatment of adult patients with pulmonary arterial hypertension classified as WHO functional class II and III, to improve exercise capacity. Efficacy has been shown inShow full indication

AdultsTreatment of adult patients with pulmonary arterial hypertension classified as WHO functional class II and III, to improve exercise capacity. Efficacy has been shown in primary pulmonary hypertension and pulmonary hypertension associated with connective tissue disease. Paediatric populationTreatment of paediatric patients aged 1 year to 17 years old with pulmonary arterial hypertension. Efficacy in terms of improvement of exercise capacity or pulmonary haemodynamics has been shown in primary pulmonary hypertension and pulmonary hypertension associated with congenital heart disease (see section 5.1).

Evidence ↗
2009-12-10Approval
Approval: Sildenafil Actavis (EMA)
Indication: Treatment of men with erectile dysfunction, which is the inability to achieve or maintain a penile erection sufficient for satisfactory sexual performance. In order for SildenafilShow full indication

Treatment of men with erectile dysfunction, which is the inability to achieve or maintain a penile erection sufficient for satisfactory sexual performance. In order for Sildenafil Actavis to be effective, sexual stimulation is required.

Evidence ↗
2005-10-28Approval
Approval: Revatio (EMA)
Indication: Treatment of adult patients with pulmonary arterial hypertension classified as World Health Organization (WHO) functional class II and III, to improve exercise capacity. EfficacyShow full indication

Treatment of adult patients with pulmonary arterial hypertension classified as World Health Organization (WHO) functional class II and III, to improve exercise capacity. Efficacy has been shown in primary pulmonary hypertension and pulmonary hypertension associated with connective tissue disease. Paediatric population Treatment of paediatric patients aged one year to 17 years old with pulmonary arterial hypertension. Efficacy in terms of improvement of exercise capacity or pulmonary haemodynamics has been shown in primary pulmonary hypertension and pulmonary hypertension associated with congenital heart disease. Revatio solution for injection is for the treatment of adult patients with pulmonary arterial hypertension who are currently prescribed oral Revatio and who are temporarily unable to take oral therapy, but are otherwise clinically and haemodynamically stable. Revatio (oral) is indicated for treatment of adult patients with pulmonary arterial hypertension classified as WHO functional class II and III, to improve exercise capacity. Efficacy has been shown in primary pulmonary hypertension and pulmonary hypertension associated with connective tissue disease.

Evidence ↗
mhraMedicines and Healthcare products Regulatory Agency· 1 event
2018-11-14Safety communicationSafety
Drug Safety Update: Sildenafil (Revatio and Viagra): reports of persistent pulmonary hypertension of the newborn (PPHN) following in-utero exposure in a clinical trial on intrauterine growth restriction
Evidence ↗

Contains information from the European Medicines Agency (European Medicines Agency), © EMA, reused under CC BY 4.0.

Contains public sector information from the Medicines and Healthcare products Regulatory Agency (MHRA) licensed under the Open Government Licence (OGL v3).

Clinical trials

187 trials

The current development programme across all trial phases — status mix, phase distribution and the late-stage studies shaping the evidence base.

Development programme
CLINICALTRIALS.GOV · LIVE REGISTRY
187
registered trials across all phases
LATEST COMPLETION 2025
16
Active studies
13
Recruiting
115
Late-stage (III+)
112
Completed
59
Discontinued
PHASE DISTRIBUTIONn = 187
Early Phase 19Phase 118Phase 1 / 210Phase 235Phase 2 / 316Phase 332Phase 449Phase N / A18

Late-stage studies

Phase III+ trials still open or recently active — where late-stage evidence is being generated.

Recent completions

Trials that read out recently, adding to the completed evidence base.

Research activity

7 papers

Key research shaping understanding of this drug, combining the latest publications with the most influential evidence.

Publications over time
20102015
Most influential
Recent papers
Major research themes1
Exercise Tolerance1
Journals, researchers & institutions
Top journals
  • Circulation2
  • Haematologica1
  • JAMA1
  • Journal of the American Academy of Dermatology1
  • Lung1
  • The European respiratory journal1
Leading researchers
  • Mann DL2
  • Anstrom KJ1
  • Bart BA1
  • Bejarano PA1
  • Benjamin L1
  • Borlaug BA1
  • Braunwald E1
  • Bull DA1
Leading institutions
free-text, unnormalised
  • Center for Pulmonary Hypertension1
  • Emory-Children’s Center for Developmental Lung Biology1
  • Global Clinical Development1
  • Lucile Packard Children's Hospital at the Stanford University School of Medicine1
  • Mayo Clinic1
  • Sapienza University of Rome1
References & data sources
  • RxNorm (U.S. National Library of Medicine) — drug identity
  • ChEMBL (EMBL-EBI) & UniProt — pharmacology and targets
  • Europe PMC — research literature
  • ClinicalTrials.gov — clinical trials
  • Regulatory event sources are credited in the Regulatory Timeline above.