Onset of action of loratadine/montelukast combination in subjects with seasonal allergic rhinitis in the environmental exposure unit
Bibliographic record
Abstract
Onset of action is recognized as an important pharmacologic property of allergic rhinitis medications and can be reliably determined under the controlled conditions of the Environmental Exposure Unit (EEU). To evaluate the onset of action of loratadine/montelukast (10 mg/10 mg) versus placebo in subjects with ragweed-induced seasonal allergic rhinitis (SAR). A single-center, double-blind, parallel-group study of ragweed-sensitive allergic rhinitis subjects (N=310), performed in the EEU. Subjects were exposed to ragweed pollen in the EEU and symptoms were recorded at 30, 60, 90, and 120 minutes prior to a single dose of loratadine/montelukast or placebo. After dosing, symptoms were recorded for 4 hours - at 15-minute intervals for the first 2 hours and 30-minute intervals for the final 2 hours. The primary endpoint was the time to onset of action for loratadine/montelukast, defined as the first time point at which the mean change from baseline in total symptom score (TSS) for loratadine/montelukast became and remained significantly better than placebo. Secondary endpoints included nasal congestion scores and peak nasal inspiratory flow (PNIF). The onset of action of loratadine/montelukast for TSS was 1 hour 15 minutes (p=0.005 versus placebo). Loratadine/montelukast reduced nasal congestion as indicated by significant improvements in both the nasal congestion score (p=0.011) and PNIF measurements (p=0.007) within 1 hour 15 minutes post dose. The incidence of treatment-emergent adverse events was similar between groups. The onset of action following treatment with loratadine/montelukast was 1 hour 15 minutes for TSS, as well as for nasal congestion. Loratadine/montelukast was well tolerated.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".