1,021
Participants
Start Date
November 30, 2006
Primary Completion Date
May 31, 2007
Study Completion Date
May 31, 2007
Diphenhydramine 50 mg
"Three times daily: two diphenhydramine 25 mg capsules~Twice daily: one pseudoephedrine-matching placebo tablet"
Diphenhydramine 25 mg
"Three times daily: one diphenhydramine 25 mg capsule and one diphenhydramine-matching placebo capsule~Twice daily: one pseudoephedrine-matching placebo tablet"
Pseudoephedrine 120 mg
"Three times daily: two diphenhydramine-matching placebo capsules~Twice daily: one pseudoephedrine 120 mg tablet"
Allergy/Immunology Research Center of North Texas, Dallas
Allergy Asthma Research Institute, Waco
Benchmark Research - San Angelo, San Angelo
Kerrville Research Associates, Kerrville
Central Texas Health Research, New Braunfels
Sun Research Institute, San Antonio
Biogenics Research Institute, San Antonio
Diagnostics Research Group, San Antonio
Sylvana Research Associates, San Antonio
Benchmark Research - Austin, Austin
Allergy and Asthma Associates, Austin
Lovelace Scientific Resources, Austin
Johnson & Johnson Consumer and Personal Products Worldwide
INDUSTRY