Caffeine and Dopamine
Caffeine modestly increases dopamine levels and enhances the density of dopamine receptors, allowing for a greater experience of its effects. However, combining stimulants, like caffeine and nicotine, can lead to temporary boosts in motivation but may ultimately diminish overall energy and drive if overused. Moderation is key to maintaining a healthy balance in dopamine release and motivation levels.In this clip
From this podcast

Huberman Lab
Controlling Your Dopamine For Motivation, Focus & Satisfaction | Huberman Lab Podcast #39
Related Questions
How does caffeine increase dopamine levels?
Does Andrew Huberman say that caffeine may increase dopamine but the more habitual consumer you are, the less dopamine you get?
How does caffeine increase dopamine levels in the episode Using Caffeine to Optimize Mental & Physical Performance | Huberman Lab Podcast 101 and the clip Caffeine and Exercise?