Caffeine and Cerebrovascular Reactivity
Public ClinicalTrials.gov record NCT04730193. 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
The Effect of Caffeine on Cerebrovascular and Retinal Microvessel Reactivity
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Caffeine is the most commonly used stimulant drug with well documented effects on cerebral vascula-ture. Caffeine is known to non-specifically bind to adenosine receptors in the brain and to reduce resting blood flow while improving attention and cognitive function, which suggests that it may allow a more efficient dynamic blood flow regulation through neurovascular coupling. This study will use standardized dose of caffeine to test its effect on NVC responses in cerebral and retinal arterioles.
Study identification
- NCT ID
- NCT04730193
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Early Phase 1
- Enrollment
- 10 participants
Conditions and interventions
Eligibility (public fields only)
- Age range
- 21 Years to 85 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
- Jan 31, 2021
- Primary completion
- Jul 31, 2022
- Completion
- Jul 31, 2022
- Last update posted
- Aug 8, 2022
2021 – 2022
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Translational GeroScience Laboratory | Oklahoma City | Oklahoma | 73117 | — |
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 NCT04730193, 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 Aug 8, 2022 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04730193 live on ClinicalTrials.gov.