Completed NA INTERVENTIONAL 2-arm NCT00860795

Immunologic Effects of Echinacea

Study of the Immunologic Effects of Echinacea Purpurea in Adults

Sponsor: National Center for Complementary and Integrative Health (NCCIH)

Conditions Upper Respiratory Tract Infections

Interventions Echinacea purpurea placebo

Updated 8 times since 2017 Last updated: Apr 29, 2018 Started: Mar 31, 2009 Primary completion: Aug 31, 2009 Completion: Aug 31, 2009

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00860795, this NA trial focuses on Upper Respiratory Tract Infections and remains completed. Sponsored by National Center for Complementary and Integrative Health (NCCIH), it has been updated 8 times since 2009, reflecting limited change activity. This study is part of the global effort to build evidence for infectious disease interventions.

Status Flow

Change History

8 versions recorded

Sep 2024 — Present [monthly]

Completed NA
Jul 2024 — Sep 2024 [monthly]

Completed NA
Jan 2023 — Jul 2024 [monthly]

Completed NA
Dec 2022 — Jan 2023 [monthly]

Completed NA
Jan 2021 — Dec 2022 [monthly]

Completed NA

▶ Show 3 earlier versions

Jun 2018 — Jan 2021 [monthly]

Completed NA
Feb 2017 — Jun 2018 [monthly]

Completed NA
Jan 2017 — Feb 2017 [monthly]

Completed NA

First recorded

Mar 2009

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

National Center for Complementary and Integrative Health (NCCIH)
University of Washington

Data source: University of Washington

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Kenmore, United States