Benzonatate Dose Tolerance Study

• Maximum Observed Plasma Concentration (Cmax) [ Time Frame: 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 6, 8, 10, 12, and 24 hours post dose ] [ Designated as safety issue: No ]
• Time to Reach Maximum Observed Plasma Concentration (Tmax) [ Time Frame: 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 6, 8, 10, 12, and 24 hours post dose ] [ Designated as safety issue: No ]
• Plasma Decay Half-Life (t1/2) [ Time Frame: 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 6, 8, 10, 12, and 24 hours post dose ] [ Designated as safety issue: No ]
• Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) [ Time Frame: 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 6, 8, 10, 12, and 24 hours post dose ] [ Designated as safety issue: No ]
• Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUCinf) [ Time Frame: 0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 6, 8, 10, 12, and 24 hours post dose ] [ Designated as safety issue: No ]

This is a single-center, randomized, third party blind, placebo controlled, dose escalation study of benzonatate following single dose administration. The primary oobjective is to assess the safety and tolerability of increasing oral doses of benzonatate following single dose administration in healthy male and female subjects.

• Drug: Placebo
  Placebo - single dose at start of each treatment period
• Drug: Benzonatate - 400 mg
  Benzonatate - 400 mg single dose
• Drug: Benzonatate - 600 mg
  Benzonatate - 600 mg single dose

• Placebo Comparator: Placebo
  Placebo Control
  Intervention: Drug: Placebo
• Experimental: Benzonatate
  Benzonatate Active
  Interventions:

  • Drug: Benzonatate - 400 mg
  • Drug: Benzonatate - 600 mg

Inclusion Criteria:

• Healthy male and/or 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, or clinical laboratory tests.

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing).

Any other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results, and in the judgment of the investigator, would make the subject inappropriate for entry into this study.