Hacker News Reader

In general, it can take between 7 and 14 days to fully recover. Source: http://mentalhealthdaily.com/2014/03/25/caffeine-withdrawal-...

In my case it takes a couple of weeks. I've had to go cold turkey once in my 20s and since then i keep an eye on my intake. In some cases (crunch time, onsite, etc) I binge and then it takes a while to readjust, but never less than 3-4 days. I'm slightly obese as well so that doesn't help either, but I've noticed that the solution when I feel slow is usually "more and more water".

Having quit 7 days ago, I can tell you that the worst of the symptoms (headaches, aching body, etc.) mostly passed within the first 3-4 days.

But the lack of energy is real and persistent. My body and routine are both recovering.

I remember reading it takes 10-15 days, but yeah it's relatively fast to reset your body's tolerance to caffeine.

I recently quit, and my caffeine intake was at most moderate, but it took me 6-7 days to feel totally normal.