# Efficacy Study of Sublingual Immunotherapy to Treat Ragweed Allergies

> **NCT00599872** · PHASE3 · COMPLETED · sponsor: **Greer Laboratories** · enrollment: 430 (actual)

## Conditions studied

- Allergic Rhinitis

## Interventions

- **BIOLOGICAL:** Standardized Ragweed Allergenic Extract
- **BIOLOGICAL:** Placebo

## Key facts

- **NCT ID:** NCT00599872
- **Lead sponsor:** Greer Laboratories
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-03
- **Primary completion:** 2008-11
- **Final completion:** 2008-12
- **Target enrollment:** 430 (ACTUAL)
- **Last updated:** 2015-01-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00599872

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00599872, "Efficacy Study of Sublingual Immunotherapy to Treat Ragweed Allergies". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00599872. Licensed CC0.

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