Effectiveness Rating for Caffeine's Ability to Improve Cognitive Ability

The effectiveness rating is a measure of how well caffeine is able to improve cognitive ability. The overall rating for this claim is 2.2 out of 3. There is some research showing the supplement's ability to deliever on this particular claim is warranted. Using Caffeine to improve cognitive ability may lead to positive results.

Confidence Rating for Caffeine's Ability to Improve Cognitive Ability

The confidence rating is a mesure of how valid the effectiveness rating is. This rating is based on how many studies are included in the database on this topic.

There are 17 studies in the database on caffeine; the confidence rating is 340. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating.

Caffeine Dose to Improve Cognitive Ability

Dosage Frequency Daily Total Effectiveness Rating of Dosage
408mg once daily 408mg
200mg once daily 200mg

These dosages are based on body weight. The default value is 150 pounds. Enter your weight and click update to get appropriate dosages for your own body weight.


Title of Study
Caffeine improves physical and cognitive performance during exhaustive exercise
Effects of caffeine, sleep loss, and stress on cognitive performance and mood during U.S. Navy SEAL training. Sea-Air-Land
Caffeine effects on marksmanship during high-stress military training with 72 hour sleep deprivation
Effects of caffeine on mood and performance: a study of realistic consumption
Effects of repeated doses of caffeine on performance and alertness: new data and secondary analyses
Effects of low doses of caffeine on cognitive performance, mood and thirst in low and higher caffeine consumers
Effects of caffeine in non-withdrawn volunteers
Acute caffeine intake before and after fatiguing exercise improves target shooting engagement time
Caffeine restores engagement speed but not shooting precision following 22 h of active wakefulness
Slow release caffeine and prolonged (64-h) continuous wakefulness: effects on vigilance and cognitive performance
Effect of Caffeine on Attention and Alertness Measured in a Home-Setting, Using Web-Based Cognition Tests
Effects of caffeine on mood and memory
Psychostimulant and other effects of caffeine in 9- to 11-year-old children
Acute effects of caffeine in volunteers with different patterns of regular consumption
Effect of caffeine on target detection and rifle marksmanship
Physiological and cognitive responses to caffeine during repeated, high-intensity exercise
The effects of alpha-glycerylphosphorylcholine, caffeine or placebo on markers of mood, cognitive function, power, speed, and agility