The primary aim of this randomised, double-blind, placebo-controlled, cross-over study is to assess the short-term cognitive effects of two beverages containing 100 and 300 mg coffeeberry extract (obtained from the fruit of the coffee plant (Coffea arabica) compared to a placebo beverage. The trial will utilise the COMPASS cognitive assessment system and cognitive demand battery (CDB) and mood visual analogue scales (VAS) with assessments taking place at baseline, 60- and 120-minutes post treatment, on four separate testing days separated by 7 days. A treatment containing 75 mg caffeine will be used as a positive control to document participants' responsiveness to an established psychostimulant.
Age range
18 Years – 49 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Mental fatigue Visual Analog Scale (VAS) score
Timeframe: Change from baseline to 120 min post-coffeeberry beverage (100 and 300 mg) consumption during a Cognitive Demand Battery (CDB), compared to placebo beverages. Less mental fatigue is better.
Mental alertness Visual Analog Scale (VAS) score
Timeframe: Change from baseline to 120 min post-coffeeberry beverage (100 and 300 mg) consumption during a Cognitive Demand Battery (CDB), compared to placebo beverages. More mental alertness is better.