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A Randomized, Double-Blinded, Placebo-Controlled, Two-Way Crossover Study to Investigate the Safety and Toleration of Single Dose Sildenafil in Subjects Receiving Chronic UK-369,0031

A Randomized, Double-Blinded, Placebo-Controlled, Two-Way Crossover Study to Investigate The Safety And Toleration Of Single Dose Sildenafil In Subjects Receiving Chronic UK-369,003.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00814736
Enrollment
22
Registered
2008-12-25
Start date
2008-08-31
Completion date
2008-09-30
Last updated
2008-12-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Erectile Dysfunction, Prostatic Hyperplasia, Urinary Bladder, Overactive

Brief summary

To investigate the safety and overall tolerability of co-administration two PDE5 inhibitors UK369,003 and sildenafil

Interventions

DRUGUK369,003

oral tablet, once a day

DRUGsildenafil

single oral dose on day 14 or day 17

DRUGsildenafil matching placebo

single oral dose on day 14 or day 17

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
MALE
Age
40 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Evidence of a personally signed and dated informed consent document indicating that the subject (or a legally acceptable representative) has been informed of all pertinent aspects of the study. * Healthy male subjects between the ages of 40 and 55 years, inclusive * Body Mass Index (BMI) of approximately 18 to 30 kg/m2; and a total body weight \>50 kg (110 lbs).

Exclusion criteria

* Evidence or history of clinically significant haematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at time of dosing). * Loss of vision in one eye due to non-arteritic ischemic optic neuropathy (NAION) regardless of whether or not this event was temporally associated with the use of a PDE5 inhibitor.

Design outcomes

Primary

MeasureTime frame
Safety and toleration assessed by non-leading questioning, incidence of adverse events and laboratory testing.hours

Secondary

MeasureTime frame
Incidence of postural hypotension.hours
Standing and supine pulse rate (PR) at each postdose time.hours
Standing systolic and diastolic blood pressure (BP) and supine systolic and diastolic BP at each postdose time.hours

Countries

Singapore

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026