Caffeine and Addiction: what does Caffeine-ergotamine do? Today I will explore the question, "What does Caffeine-ergotamine do?" Caffeine is known to be a stimulant that can increase alertness and awareness by acting on adenosine, which is in the brain. Caffeine can act as both an excitatory (excitatory neurotransmitter) and inhibitory (inhibitory neurotransmitter). It is also believed to have...