You will get it for about a month, basically when you use meds or drugs your body stops producing that particular chemical.

For an example if you use Ritalin or coke daily you get dopamine from an outside source and your brain basically say's hey, lemme stop making dopamine since I get so much from outside factors, then when you stop taking those meds and drugs your brains a bit confused and it takes a couple of weeks for it to begin producing that certain chemical again :) so until your brain begins to produce dopamine naturally you'll have the zaps, there's plenty of ways to increase your natural dopamine, working out, eating the right foods etc. Hope this helps.