How does caffeine work vs. amphetamine?

Caffeine is broken down quickly by the body and it's effect is short-lived. People can also acquire a tolerance for it as the body gets used to it's effects. Amphetamine. Amphetamines resemble dopamine. read more

Caffeine looks like Adenosine to nerve cells and binds to the same receptors. Adenosine is normally used by the body to promote sleep and it also tells the body to dilate the blood vessels in the brain to help circulate oxygen while you sleep. Caffeine binds to the same receptors, but generally has the opposite effect. read more

It enhances your energy/motivation some, whereas amphetamine is a direct injection of high levels of both motivation and energy, giving a much more euphoric feeling. Naturally, because the high is much more intense with amphetamines, the come down will knock you on your ass compared to coffee, which just makes you feel a bit groggy and what not. read more