~11 spots leftby Apr 2026

An Open-Label, Extension Study Evaluating the Safety, Toleration, and Efficacy of Sildenafil in Women With Sexual Arousal Disorder

Recruiting in Palo Alto (17 mi)
+70 other locations
Age: 18+
Sex: Female
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 2
Waitlist Available
Sponsor: Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
No Placebo Group
Prior Safety Data
Approved in 5 Jurisdictions

Trial Summary

What is the purpose of this trial?

The purpose of this study is to evaluate the safety and toleration of oral sildenafil administered as required by women with Female Sexual Arousal Disorder (FSAD) who successfully complete one of the following Pfizer-sponsored, 12-week, double-blinded clinical trials: A1481082 or A1481123. Addition of this 52-week open-label extension will increase the total duration of sildenafil exposure to 64 weeks. Sustained efficacy will also be evaluated after 3 and 6 months of open-label therapy.

Research Team

PC

Pfizer CT.gov Call Center

Principal Investigator

Pfizer

Eligibility Criteria

Inclusion Criteria

Included were subjects who completed Pfizer study A1481082 or A1481123 without a major protocol violation and with all treatment-related adverse events resolved prior to crossover into the open-label study.
For subjects receiving hormone replacement therapy and/or selective serotonin reuptake inhibitor treatment, dosage of these must be stable at the start of this extension study and remain stable throughout.
Subjects should continue to maintain a stable sexual relationship throughout the study.

Treatment Details

Interventions

  • Sildenafil (Phosphodiesterase Type 5 (PDE5) Inhibitor)
Participant Groups
1Treatment groups
Experimental Treatment
Group I: Arm 1Experimental Treatment1 Intervention

Sildenafil is already approved in Canada, Japan for the following indications:

🇨🇦
Approved in Canada as Sildenafil for:
  • Erectile dysfunction
  • Pulmonary arterial hypertension
🇯🇵
Approved in Japan as Sildenafil for:
  • Erectile dysfunction
  • Pulmonary arterial hypertension

Find a Clinic Near You

Research Locations NearbySelect from list below to view details:
Pfizer Investigational SiteHuntsville, AL
Pfizer Investigational SiteDallas, TX
Pfizer Investigational SiteSanta Monica, CA
Pfizer Investigational SiteRichmond, VA
More Trial Locations
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Who Is Running the Clinical Trial?

Pfizer's Upjohn has merged with Mylan to form Viatris Inc.

Lead Sponsor

Trials
435
Patients Recruited
407,000+