Study Summary
This trial compares the effectiveness of doxepin versus diphenhydramine in treating isolated urticaria in the emergency department.
Treatment Effectiveness
Effectiveness Progress
Study Objectives
1 Primary · 0 Secondary · Reporting Duration: 1 hour after med administration, 2 hours after administration, and prior to discharge
Trial Safety
Safety Progress
Side Effects for
Trial Design
2 Treatment Groups
Diphenhydramine
1 of 2
Doxepin
1 of 2
Active Control
Experimental Treatment
160 Total Participants · 2 Treatment Groups
Primary Treatment: Doxepin · No Placebo Group · Phase 3
Trial Logistics
Trial Timeline
Who is running the clinical trial?
Eligibility Criteria
Age 18 - 65 · All Participants · 4 Total Inclusion Criteria
Mark “Yes” if the following statements are true for you:Frequently Asked Questions
Are we seeking volunteers who meet the age requirement for this experiment?
"For this particular clinical trial, only patients aged 18 to 65 can enroll. If you are not within this age range, there are 16 other clinical trials you may be eligible for." - Anonymous Online Contributor
How many research subjects are you enrolling in this investigation?
"Yes, you are correct. The clinical trial is still recruiting patients and was last updated on 5/17/2022. This study is looking for 160 participants from a single site." - Anonymous Online Contributor
Are there negative consequences associated with Doxepin?
"Doxepin has received a safety score of 3. This means that while it is still in clinical trials, there is evidence of its efficacy and multiple rounds of data supporting its safety." - Anonymous Online Contributor
What medical prerequisites are necessary in order to enroll in this research project?
"Researchers are looking for around 160 adult patients that have urticaria in order to study the long-term effects of the condition." - Anonymous Online Contributor
How does Doxepin's trial history compare to similar drugs?
"As of now, there are 34 separate clinical trials researching Doxepin. Of these, 9 have progressed to Phase 3. though most of the Doxepin studies are based in Birmingham, Alabama, there are 801 total locations running these experiments." - Anonymous Online Contributor