Acute Effects of Organic Guayusa Extract
Public ClinicalTrials.gov record NCT05928195. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Acute, Dose-Response Effects of Organic Guayusa Extract on Cognitive Performance, Mood, Resting Metabolism, and Blood Pressure, Heart Rate, and Heart Electrical Activity
Study identification
- NCT ID
- NCT05928195
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Nathaniel Jenkins
- Other
- Enrollment
- 32 participants
Conditions and interventions
Interventions
- Acute High-Dose Guayusa Extract Supplementation Dietary Supplement
- Acute Moderate-Dose Guayusa Extract Supplementation Dietary Supplement
- Placebo Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 18 Years to 45 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 15, 2022
- Primary completion
- Jul 12, 2022
- Completion
- Apr 11, 2023
- Last update posted
- Jul 4, 2023
2022 – 2023
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Integrative Laboratory of Applied Physiology and Lifestyle Medicine | Iowa City | Iowa | 52242 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05928195, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 4, 2023 · Synced May 18, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05928195 live on ClinicalTrials.gov.