# A Study to Compare the Efficacy of Levocetirizine to Placebo in Reducing Symptoms of Seasonal Allergic Rhinitis (SAR) in Sensitive Subjects Exposed to Ragweed Pollen

> **NCT00291642** · PHASE2 · COMPLETED · sponsor: **UCB Pharma** · enrollment: 551 (actual)

## Conditions studied

- Rhinitis
- Allergic
- Seasonal

## Interventions

- **DRUG:** Placebo drops
- **DRUG:** Placebo tablets matching to levocetirizine
- **DRUG:** Placebo tablets matching to cetirizine
- **DRUG:** Levocetirizine drops
- **DRUG:** Levocetirizine tablets
- **DRUG:** Cetirizine drops
- **DRUG:** Cetirizine tablets

## Key facts

- **NCT ID:** NCT00291642
- **Lead sponsor:** UCB Pharma
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2006-01-01
- **Primary completion:** 2006-04-01
- **Final completion:** 2006-04-01
- **Target enrollment:** 551 (ACTUAL)
- **Last updated:** 2018-09-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00291642

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00291642, "A Study to Compare the Efficacy of Levocetirizine to Placebo in Reducing Symptoms of Seasonal Allergic Rhinitis (SAR) in Sensitive Subjects Exposed to Ragweed Pollen". Retrieved via AI Analytics 2026-08-19 from https://api.ai-analytics.org/clinical/NCT00291642. Licensed CC0.

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