# Double-blind Trial to Investigate Efficacy and Tolerance of Ambroxol Lozenges 20 mg in Sore Throat

> **NCT00525044** · PHASE3 · COMPLETED · sponsor: **Boehringer Ingelheim** · enrollment: 249 (actual)

## Conditions studied

- Pharyngitis

## Interventions

- **DRUG:** Ambroxol
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT00525044
- **Lead sponsor:** Boehringer Ingelheim
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-08-01
- **Primary completion:** 2008-01-01
- **Final completion:** 2008-01-01
- **Target enrollment:** 249 (ACTUAL)
- **Last updated:** 2019-07-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00525044

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00525044, "Double-blind Trial to Investigate Efficacy and Tolerance of Ambroxol Lozenges 20 mg in Sore Throat". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT00525044. Licensed CC0.

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