Disclaimer: The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The tool is not a substitute for the care provided… (more)
“On the other hand, the excitatory effect of 40 Μg/g caffeine could be reduced only by p-chlorophenylalanine (3 times 600 Μg/g) but not by phenoxybenzamine and propranolol.”
“The number of head twitches produced by caffeine in 5,7-DHT-treated mice was increased twofold by p-chlorophenylalanine (p-CPA), the tryptophan hydroxylase inhibitor.”
Pharmacology Biochemistry and Behavior • 1993 | View Paper
“The decline of brain serotonin elicited by an inhibitor of serotonin synthesis, parachlorophenylalanine , was prevented by the concomitant administration of caffeine or higher doses of theophylline.”