Comment Prozac worked for me (Score 1) 1337
Back in 1991, I was put on Prozac for about a year. One of the pleasant side effects was I had no withdrawal symptoms from caffeine or sugar. (Unfortunately, some of the other side effects are not as pleasant -- especially the shaky hands and sexual problems. But they only get annoying after about 6 months.)
13 years later, I'm addicted to caffeine again and it's not so easy this time. Now, I only drink decaf beverages at home and caffeinated beverages at work. But, I still haven't been able to take the step of cutting it out altogether. And I can't resist that triple venti latte when I don't get enough sleep.
I don't know whether you could convince a doctor to prescribe an SSRI medication just to quit caffeine. Perhaps if your withdrawal symptoms are particularly bad and you have other health problems aggravated by the caffeine.