# Three Arm Trial of Immune Effects of Echinacea

> **NCT01129128** · NA · COMPLETED · sponsor: **University of Washington** · enrollment: 67 (actual)

## Conditions studied

- Upper Respiratory Tract Infections

## Interventions

- **BIOLOGICAL:** Echinacea purpurea product
- **BIOLOGICAL:** Echinacea purpurea product
- **BIOLOGICAL:** Placebo

## Key facts

- **NCT ID:** NCT01129128
- **Lead sponsor:** University of Washington
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2010-05
- **Primary completion:** 2011-03
- **Final completion:** 2011-03
- **Target enrollment:** 67 (ACTUAL)
- **Last updated:** 2012-06-21

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01129128

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01129128, "Three Arm Trial of Immune Effects of Echinacea". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT01129128. Licensed CC0.

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