Related Experiment Video
Updated: Aug 11, 2026

07:22
Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
Double-blind, placebo-controlled study of terfenadine and hydroxyzine in patients with chronic idiopathic urticaria
P B Boggs1, C N Ellis, J Grossman
1Asthma-Allergy Clinic, Shreveport, LA.
Abstract:
Results of a double-blind, randomized, placebo-controlled, parallel study in 37 patients indicate that terfenadine, 60 mg bid, is significantly more effective than placebo and as effective as hydroxyzine, 25 mg qid, in the treatment of chronic idiopathic urticaria without causing the somnolence that was associated with the use of hydroxyzine.
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