A member asked:

Why does caffeine make me shake and make me feel terrible physically and mentally?

A doctor has provided 1 answer
Dr. Ralph Morgan Lewis answered

Specializes in Family Medicine

Stimulant: Adenosine suppresses activity in the central nervous system. Caffeine antagonizes Adenosine & increases acetylcholine, epinephrine, dopamine, serotonin, glutamate, norepinephrine, cortisol (& inhibits GABA at higher doses). Inhibitors r blocked, stimulators r enhanced.

Answered 2/18/2015

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