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Evaluation of the Effect of Benzonatate on QT Intervals Following Single Dose Administration of Benzonatate to Healthy Volunteers

Last updated on February 22, 2019

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Study Location
Pfizer Investigational Site
Overland Park, Kansas, 66212 United States
Contact
1-800-718-1021
Eligibility criteria
Condition
The disease, disorder, syndrome, illness, or injury that is being studied.
Healthy Volunteers
Sex
Females and Males
Age
Pediatric Trials: 0-17 Years
Adult Trials: 18+ Years
18-55 years
Inclusion criteria
The factors, or reasons, that allow a person to participate in a clinical study.
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- Healthy male and female subjects between the ages of 18 and 55 years, inclusive.
Healthy is defined as no clinically relevant abnormalities identified by a detailed
medical history, full physical examination, including blood pressure and pulse rate
measurement, 12- lead ECG and clinical laboratory tests.

- Female subjects of non-childbearing potential must meet at least one of the following
criteria:

1. Achieved postmenopausal status, defined as: cessation of regular menses for at
least 12 consecutive months with no alternative pathological or physiological
cause; and have a serum FSH level within the laboratory's reference range for
postmenopausal females;

2. Have undergone a documented hysterectomy and/or bilateral oophorectomy;

3. Have medically confirmed ovarian failure. All other female subjects (including
females with tubal ligations and females that do NOT have a documented
hysterectomy, bilateral oophorectomy and/or ovarian failure) will be considered
to be of childbearing potential.

- Body mass index (BMI) of 17.5 to 30.5 kg/m2, inclusive, and a total body weight >50 kg
(110 lb).

- Evidence of a personally signed and dated informed consent document indicating that
the subject has been informed of all aspects of the study.

- Subjects willing and able to comply with scheduled visits, treatment plan, laboratory
tests, and other study procedures.

Exclusion criteria
The factors, or reasons, that prevent a person from participating in a clinical study.
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- Significant ECG abnormality at screening as determined by the investigator.

- History or risk factors of QT prolongation or torsades de pointes, congenital deafness
and family history of sudden death.

- 12-lead ECG demonstrating QTcF >450 msec or a QRS interval >110 msec at Screening.

- Use of medications or dietary supplements capable of inducing or inhibiting hepatic
enzyme metabolism or transport (e.g., barbiturates, rifampin, carbamazepine,
phenytoin, primidone, or St. John's Wort) within 28 days of the first dose of study
medication.

- Consumption of grapefruit or grapefruit containing products within 7 days prior to the
first dose of study medication.

- Known history of hypersensitivity, allergy, severe adverse drug reaction or
intolerance to quinolone antibiotics.

- Known hypersensitivity to benzonatate or other ester-type local anesthetics (ie,
tetracaine, procaine).

- Subjects with a presence or history of dysphagia or difficulty swallowing pills.

- Subjects taking any concomitant anticonvulsant medications or with a history of
seizure disorder.

- Subjects with a positive response to the question of actual attempt in the suicidal
behavior section of the C-SSRS (Columbia-Suicide Severity Rating Scale). Subjects with
active suicidal ideation with intent to act within 6 months of screening as determined
by a positive response to questions 4 or 5 in the suicidal ideation section of the
C-SSRS.

- Screening laboratory values considered clinically significant by the investigator.

- Screening supine blood pressure ?140 mm Hg (systolic) or ?90 mm Hg (diastolic),
following at least 5 minutes of rest.

NCT02207699
Pfizer
Completed
Evaluation of the Effect of Benzonatate on QT Intervals Following Single Dose Administration of Benzonatate to Healthy Volunteers

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