Bioequivalence of Single Dose Phenylephrine Extended Release Tablets and Phenylephrine HCl Immediate Release Tablets Dosed Every Four Hours (P08340)(COMPLETED)

Study Overview
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Brief Summary
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This study will assess the food-effect bioavailability of an extended release formulation of phenylephrine HCl and its bioequivalence to the marketed immediate release phenylephrine HCl product.

Official Title
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A Randomized Crossover Bioequivalence Study Comparing a Single Dose of Phenylephrine HCl 30 mg Extended Release Tablet to Three Phenylephrine HCl 10 mg Immediate Release Tablets Each Consecutively Dosed Four Hours Apart Under Fed and Fasting Conditions

Conditions
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Nasal Congestion

Intervention / Treatment
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* Drug: Phenylephrine HCl Extended Release
* Drug: Phenylephrine HCl Immediate Release


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: In good health Female participants must not be pregnant Agrees to use two acceptable methods of birth control throughout the study Agrees not to take monoamine oxidase inhibitor (MAOI) for 2 weeks prior to, during, and 2 weeks after the end of the study Exclusion Criteria: Any significant medical condition which is a contraindication to the use of phenylephrine HCl, might interfere with the study, or requires treatment expected to affect blood pressure Any infectious disease within 4 weeks prior to initial treatment administration History of malignancy, except basal cell carcinoma Cannot comply with requirement to abstain from the use of any drugs (except acetaminophen or herbal/vitamin supplements) within 14 days prior to study and alcohol or xanthine-containing substances (coffee, chocolate) within 72 hours prior to study Received an investigational drug within thirty days prior to study drug dosing Known or apparent current or former drug addicts or alcoholics Positive for Human Immunodeficiency Virus (HIV) antibody, hepatitis B surface antigen, or hepatitis C antibody Cannot accept a high-fat, high-calorie breakfast Known allergy or intolerance to phenylephrine HCl Have used phenylephrine-containing product within 2 weeks prior to study start Have smoked tobacco, used tobacco products, or used a nicotine-containing smoking cessation aid within the past 6 months

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Phenylephrine HCl Extended Release - Fasted<br>Single dose phenylephrine HCl extended release tablet administered under fasted conditions on Day 1 in one of four study periods | Drug: Phenylephrine HCl Extended Release<br>* One phenylephrine HCl 30 mg extended release tablet orally<br>|
| Experimental: Phenylephrine HCl Extended Release - Fed<br>Single dose phenylephrine HCl extended release tablet administered after a high-fat, high-calorie breakfast on Day 1 in one of four study periods | Drug: Phenylephrine HCl Extended Release<br>* One phenylephrine HCl 30 mg extended release tablet orally<br>|
| Active Comparator: Phenylephrine HCl Immediate Release - Fasted<br>Three single doses of phenylephrine HCl immediate release tablet four hours apart, with the first dose administered under fasted conditions on Day 1 in one of four study periods | Drug: Phenylephrine HCl Immediate Release<br>* One phenylephrine HCl 10 mg immediate release tablet every 4 hours for three doses<br>|
| Active Comparator: Phenylephrine HCl Immediate Release - Fed<br>Three single doses of phenylephrine HCl immediate release tablet four hours apart, with the first dose administered after a high-fat, high-calorie breakfast on Day 1 in one of four study periods | Drug: Phenylephrine HCl Immediate Release<br>* One phenylephrine HCl 10 mg immediate release tablet every 4 hours for three doses<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Maximum plasma concentration (Cmax) of phenylephrine |  | 0 hours to time of maximum observed plasma concentration of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) | 
| Time to Cmax (Tmax) of phenylephrine |  | 0 hours to time of maximum observed plasma concentration of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) | 
| Area under the concentration versus time curve from time 0 to the last measurable concentration (AUC[0-t]) |  | 0 hours to time of last measurable plasma concentration of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) | 
| Area under the concentration versus time curve from time 0 to infinity (AUC[0-∞]) |  | 0 hours to time of last measurable plasma concentration of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) | 
| Terminal rate constant (λz) |  | 0 hours to time of last measurable plasma concentration of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) | 
| Terminal elimination half-life (t1/2) |  | 0 hours to t1/2 of phenylephrine (blood samples will be collected up to 24 hours after first administration of study treatment) |