Caffeine

Summary:

Caffeine is a stimulatory chemical that sensitizes neurons and provides mental stimulation. It is found in coffee beans in addition to being synthesized in a laboratory and sold as a supplement.

 

Effects:

Reduces fatigue
Improved reaction time
Increased wakefulness
Increased aerobic exercise performance
Increased metabolic rate

 

References:

• Historical and Current Adenosine Receptor Agonists in Preclinical and Clinical Development
• Effect of Caffeine on Target Detection and Rifle Marksmanshipeffects of Caffeine and Glucose, Alone and Combined, on Cognitive Performance
• Caffeine and Opening the Eyes Have Additive Effects on Resting Arousal
• MeasuresCaffeinated Chewing Gum Increases Repeated Sprint Performance and Augments Increases in Testosterone in Competitive Cyclists
• Caffeine: A Double-Blind, Placebo-Controlled Study of Its Thermogenic, Metabolic, and Cardiovascular Effects in Healthy Volunteers
• Association of the Anxiogenic and Alerting Effects of Caffeine With ADORA2A and ADORA1 Polymorphisms and Habitual Level of Caffeine Consumption
  
• ​Effects of Caffeine on Plasma Renin Activity, Catecholamines and Blood Pressure
• Effects of Caffeine on Intraocular Pressure: The Blue Mountains Eye Study

• Effect of Caffeine on Lower Esophageal Sphincter Pressure in Thai Healthy Volunteers