A randomized, double-blind, parallel-group study to compare the efficacy and safety of a once-daily loratadine-pseudoephedrine combination with that of a twice-daily loratadine-pseudoephedrine combination in the treatment of allergic rhinitis

Yen An Chen, Kai Ping Chang, Yaoh Shiang Lin, Sheng Po Hao*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

2 Scopus citations

Abstract

The aim of this study is to compare the efficacy and safety of a once-daily loratadine-pseudoephedrine sustained release tablet with that of a twice-daily loratadine-pseudoephedrine in the treatment of patients with allergic rhinitis. Forty-eight subjects were randomized into either the treatment or control group. The efficacy endpoint was assessed by total symptom scores (TSS). And the results were analyzed by non-inferiority testing and t-tests. Non-inferiority testing of the once daily loratadine 10 mg-pseudoephedrine 240 mg sustained release tablets to the twice-daily loratadine 5 mg-pseudoephedrine 120 mg combination tablets was not supported by statistical significance. However, both the treatment and control groups showed a significant reduction from the baseline in TSS (P < 0.05), and the difference between groups did not reach statistical significance (P > 0.05). In conclusion, once-daily and twice-daily preparations of loratadine-pseudoephedrine were comparable in efficacy and safety in the treatment of allergic rhinitis.

Original languageEnglish
Pages (from-to)1019-1025
Number of pages7
JournalEuropean Archives of Oto-Rhino-Laryngology
Volume264
Issue number9
DOIs
StatePublished - 09 2007

Keywords

  • Allergic rhinitis
  • Intention to treat
  • Loratadine-pseudoephedrine
  • Non-inferiority testing
  • Total symptom score

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