Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function
Status:
Completed
Trial end date:
2005-11-01
Target enrollment:
Participant gender:
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.