drugset / Trial / NCT00487227
Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function
RandomizedCrossoverDouble-blindBasic science
Summary
It is often assumed that levels of caffeine found in 'decaffeinated' beverages are below any psychopharmacological threshold. However, recent findings indicate that caffeine doses as low as 9 mg may be psychoactive. The effects of caffeine have also been shown up to 6 hours post-administration. The study aimed to establish the lowest active dose of caffeine, and to ascertain the duration of any effects.
Timeline
- Start
- 2005-06
- Primary completion
- —
- Completion
- 2005-11
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Caffeine | Small molecule | 2.5 mg | Oral |
| Subject | Caffeine | Small molecule | 5 mg | Oral |
| Subject | Caffeine | Small molecule | 10 mg | Oral |
Indications
No indication recorded.