The Effect of Tablet Size on Cognitive Performance Caffeine
Public ClinicalTrials.gov record NCT03694886. 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 Tablet Size on Cognitive Performance: A Randomized Control Trial Using Caffeine
Study identification
- NCT ID
- NCT03694886
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Lead sponsor
- University of Colorado, Denver
- Other
- Enrollment
- 120 participants
Conditions and interventions
Conditions
Interventions
- Caffeine Anhydrous with small sucrose pill Drug
- Placebo - large sucrose pill Other
- Caffeine Anhydrous with large sucrose pill Drug
- Placebo - small sucrose pill Other
Drug · Other
Eligibility (public fields only)
- Age range
- 18 Years to 40 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
- Oct 30, 2018
- Primary completion
- Feb 28, 2019
- Completion
- Feb 28, 2019
- Last update posted
- Apr 16, 2019
2018 – 2019
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Colorado Denver | Denver | Colorado | 80204 | — |
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 NCT03694886, 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 Apr 16, 2019 · Synced Jul 22, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03694886 live on ClinicalTrials.gov.