Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function

• Status: Completed
• Trial end date: 2005-11-01
• Target enrollment: 0
• Participant gender: All

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.

• Phase: N/A
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: Northumbria University
• Treatments: Caffeine

Criteria

Inclusion Criteria:

• native English speaker

Exclusion Criteria:

• pregnancy

• medication

• anaemia

• heart disorder

• diabetes

• respiratory disorder

• epilepsy

• asthma

• panic attacks

• habitual smoking

• food allergy