The aim of the present study was to investigate whether the three different caffeine preparations--caffeine citrate, caffeine benzoate and the free base--used for in vitro diagnosis of malignant hyper...
Caffeine is an excellent model compound for understanding drugs of abuse/dependence. The results of self-administration and choice studies in humans clearly demonstrate the reinforcing effects of low ...
RATIONALE: Individual differences in responsiveness to caffeine occur even within a caffeine-consuming population, but the factors that mediate differential responsiveness remain unclear. OBJECTIVES: ...
The presence of a concentration of caffeine greater than or equal to 15 micrograms/ml in urine of athletes participating in competitive sport is a disqualifying factor. A study was conducted to establ...
RATIONALE: To test the classical conditioning and expectancy theories of placebo effects. OBJECTIVE: Two experiments investigated whether administration of caffeine-associated stimuli elicited conditi...
The effects of a variable daily administration of caffeine on fasting levels of caffeine in plasma and in saliva were measured in 24 patients with liver disease and hepatocellular dysfunction of varia...