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Study Evaluating Chlorpheniramine Maleate Liquid in Children and Adolescents

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00837837
Recruitment Status : Completed
First Posted : February 5, 2009
Last Update Posted : October 23, 2020
Information provided by (Responsible Party):
Wyeth is now a wholly owned subsidiary of Pfizer

Brief Summary:
The purpose of this study is to examine the pharmacokinetic parameters of chlorpheniramine in children and adolescents.

Condition or disease Intervention/treatment Phase
Allergic Reactions Drug: Chlorpheniramine Phase 1

Detailed Description:
This is a single-group, single-center, open-label, one period, bioavailability study. This study will evaluate the pharmacokinetic (PK) profile of chlorpheniramine in a population of children aged 2 to <12 yrs and adolescents aged 12 to <18 yrs. Twelve blood samples (3.0 mL) for chlorpheniramine analysis will be drawn at time 0 (pre-dose), and at 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, and 72 hours after dosing. Plasma levels of chlorpheniramine will be determined. The following primary, single-dose PK parameters for chlorpheniramine will be determined using noncompartmental methods: AUCL, AUCI, and Cmax. The following PK parameters will also be determined to provide a complete profile of the drug, as appropriate: oral clearance (CL) and volume of distribution (Vd) and adjusted for body weight (per kg); time to reach Cmax (tmax), and apparent elimination constant (Kel) and half-life (t1/2). The PK parameters will be summarized using descriptive statistics.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 36 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Single-Dose, Open-Label, Pharmacokinetic Study of Chlorpheniramine Maleate Liquid in Children and Adolescents
Actual Study Start Date : December 21, 2008
Actual Primary Completion Date : February 2, 2009
Actual Study Completion Date : February 2, 2009

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Chlorpheniramine
Chlorpheniramine dose by body weight.
Drug: Chlorpheniramine

Primary Outcome Measures :
  1. AUC and Cmax [ Time Frame: 72 hours ]

Secondary Outcome Measures :
  1. Oral clearance (CL) and volume of distribution (Vd); time to reach Cmax (tmax), and apparent elimination constant (Kel) and half-life (t1/2). [ Time Frame: 72 hours ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   2 Years to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes


Individuals may be enrolled in the study if they meet all of the following criteria:

  1. Males or females between 2 to <18 yrs of age with a minimum weight of 24 pounds and within the 5th and 95th percentiles in physical growth characteristics (i.e., height and weight) and BMI based on age and gender,
  2. Symptomatic or asymptomatic children/adolescents as follows:

i.A prior diagnosis of allergic rhinitis and either symptomatic or asymptomatic at the time of entry in the study; or ii.Symptoms of an acute Upper Respiratory Infection (URI); or iii.No symptoms of an acute URI, but at risk for developing an acute URI as evidenced by the following frequency, crowding, and exposure criteria:

  • Frequency: a history of frequent URIs defined as >6 infections/yr for children aged 2 to <6 yrs and as >4 infections per year for adolescents aged 6 to <18 yrs;
  • Crowding: living in a home with ≥4 persons, or sleeping in the same bedroom with ≥3 persons;
  • Exposure: the presence of another family member in the household who is ill with a URI, or a child in the family that is attending preschool, or attending school with ≥6 children in the class; c.Except for allergic rhinitis or a URI, children/adolescents are in normal physical health (i.e., no clinically significant systemic disease) as judged by the Investigator upon physical examination of the subject; d.Subjects do not require concomitant medication except for low-dose inhaled glucocorticoids for allergic rhinitis or mild concomitant asthma, if dose is stabilized before entry in the study (i.e., dose is not changed for one month prior to or during the study), and inhaled short-acting beta-2 adrenergic agonists for concomitant asthma, as needed; e.Post menarchal females must be using a reliable method of contraception (i.e., oral, transdermal, injectable or implanted contraceptives, IUD, cervical cap, diaphragm, condom, abstinence, or surgical sterility); f.Parent/guardian/adolescent provides written informed consent and child provides assent, if age appropriate.


Individuals are not eligible for entry in the study if any of the following are noted:

  1. The child/adolescent weighs <24 pounds or is below the 5th or above the 95th percentiles in physical growth characteristics (i.e., height and weight) and BMI based on age and gender;
  2. Inability to swallow the medication;
  3. Eaten within 2 hours prior to dosing;
  4. A known hypersensitivity to CHLOR, any other antihistamine, or EMLA® cream;
  5. Systolic and/or diastolic blood pressure at or above the 95th percentile based on gender, and age and height percentiles. (Note: If a subject with no history of hypertension has a blood pressure reading at or above the 95th percentile, the subject will be allowed to rest for 15 minutes and the blood pressure measurement repeated. Up to 3 consecutive measurements at approximately 5 min intervals will be allowed. Subjects who continue to have systolic and/or diastolic blood pressure readings at or above the 95th percentile will be excluded from the study);
  6. History of melena or any hepatic, renal, endocrine (e.g., diabetes, thyroid disorder), cardiac, neurological, psychiatric, gastrointestinal, hematological or metabolic disorder deemed to be clinically significant by the Investigator;
  7. Any serious medical condition or medical history felt by the Investigator to place them at increased risk;
  8. The child is diagnosed with anemia or has a red blood cell count or hemoglobin level outside of normal range as evidenced by baseline hematology assessment;
  9. Asthma symptoms at the time of entry in the study or requires medication other than allowed under Inclusion Criterion d;
  10. Failure to comply with appropriate washout periods for any H-1 receptor antagonist treatment before and during the study, i.e., no use within 7 days of entering the study or at any time during the study, and no use of astemizole within the preceding 3 calendar months;
  11. Other than described in Exclusion Criterion i, use of any medication 72 hours prior to dosing;
  12. A history of drug, alcohol, or tobacco abuse (older children and adolescents), a history of Hepatitis B, a previous positive test for Hepatitis B surface antigen, or a previous positive Hepatitis C antibody;
  13. A history of HIV infection or previous demonstration of HIV antibodies;
  14. Female subjects who have experienced menarche and have a positive urine pregnancy test;
  15. Parent/guardian/subject judged by the Investigator to be unable or unwilling to comply with the requirements of the protocol;
  16. Have taken an investigational drug within 30 days prior to entering the study or have already participated in the trial;
  17. Relative of the Sponsor, Investigator, or any personnel of the study site who are directly involved with the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00837837

Sponsors and Collaborators
Wyeth is now a wholly owned subsidiary of Pfizer
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Study Director: Medical Monitor Wyeth is now a wholly owned subsidiary of Pfizer
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Wyeth is now a wholly owned subsidiary of Pfizer Identifier: NCT00837837    
Other Study ID Numbers: CF-08-01
First Posted: February 5, 2009    Key Record Dates
Last Update Posted: October 23, 2020
Last Verified: October 2020
Keywords provided by Wyeth is now a wholly owned subsidiary of Pfizer:
Additional relevant MeSH terms:
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Immune System Diseases
Dermatologic Agents
Histamine H1 Antagonists
Histamine Antagonists
Histamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Anti-Allergic Agents