# The Effects of Caffeine and L-theanine Both Alone and in Combination on Cerebral Blood Flow, Cognition and Mood

> **NCT00981955** · PHASE4 · COMPLETED · sponsor: **Northumbria University** · enrollment: 24 (actual)

## Conditions studied

- Cognitive Function
- Mood

## Interventions

- **DIETARY_SUPPLEMENT:** Caffeine and L-theanine

## Key facts

- **NCT ID:** NCT00981955
- **Lead sponsor:** Northumbria University
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2009-08
- **Primary completion:** 2010-02
- **Final completion:** 2010-02
- **Target enrollment:** 24 (ACTUAL)
- **Last updated:** 2010-07-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00981955

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00981955, "The Effects of Caffeine and L-theanine Both Alone and in Combination on Cerebral Blood Flow, Cognition and Mood". Retrieved via AI Analytics 2026-07-08 from https://api.ai-analytics.org/clinical/NCT00981955. Licensed CC0.

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