NCT00145483

Brief Summary

Meniere's disease affects a person's sense of balance. An attack can last 20 minutes to 2 hours or longer. Symptoms include rotational vertigo, hearing loss, tinnitus and a sensation of fullness in the affected ear and may be associated with nausea and vomiting. One hypothesis is that Meniere's disease is caused by the excessive accumulation of fluid in the balance tubes within the inner ear. Sildenafil may alleviate the symptoms due to its vasodilatory activity. The purpose of this study is to assess the safety and efficacy of sildenafil (Viagra) compared with placebo on symptoms during one acute attack.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
163

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Jun 2002

Longer than P75 for phase_4

Geographic Reach
1 country

4 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

June 18, 2002

Completed
3.2 years until next milestone

First Submitted

Initial submission to the registry

September 1, 2005

Completed
4 days until next milestone

First Posted

Study publicly available on registry

September 5, 2005

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 8, 2006

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 8, 2006

Completed
Last Updated

February 1, 2021

Status Verified

January 1, 2021

Enrollment Period

4.4 years

First QC Date

September 1, 2005

Last Update Submit

January 28, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Vertigo Response (4 x 6 point scale); Balance (6 point scale)

Secondary Outcomes (1)

  • Hearing/Tinnitus; Ear, Nose & Pressure/Fullness; Perf. daily activities; Nausea; Vomiting; Func. Response; Duration of the Attack and Vertigo; Rescue Medications Use; Acceptability to subject; Composite Assessment Score; Comparison to Previous Attack

Interventions

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Active Meniere's disease (2 or more definitive spontaneous episodes of vertigo 20 minutes or longer, plus hearing loss on at least 1 occasion, tinnitus or aural fullness) with confirmed diagnosis

You may not qualify if:

  • Pregnant or breast feeding females or fertile females unwilling to use agreed contraceptive methods
  • severe Meniere's diseased (more than 8 attacks per month)
  • previous ear surgery
  • intratympanic perfusions of steroids or gentamicin; requiring other medications contraindicated for Viagra (eg. nitrates)
  • with medical conditions that make Viagra contraindicated

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (4)

Pfizer Investigational Site

Bondi Junction, New South Wales, Australia

Location

Pfizer Investigational Site

Brisbane, Queensland, Australia

Location

Pfizer Investigational Site

East Melbourne, Victoria, Australia

Location

Pfizer Investigational Site

Melbourne, Victoria, Australia

Location

Related Links

MeSH Terms

Conditions

Meniere Disease

Interventions

Sildenafil Citrate

Condition Hierarchy (Ancestors)

Endolymphatic HydropsLabyrinth DiseasesEar DiseasesOtorhinolaryngologic Diseases

Intervention Hierarchy (Ancestors)

SulfonamidesAmidesOrganic ChemicalsSulfonesSulfur CompoundsPiperazinesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsPurinesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-Ring

Study Officials

  • Pfizer CT.gov Call Center

    Pfizer

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
DOUBLE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 1, 2005

First Posted

September 5, 2005

Study Start

June 18, 2002

Primary Completion

November 8, 2006

Study Completion

November 8, 2006

Last Updated

February 1, 2021

Record last verified: 2021-01

Locations