it totally depends on a lot of things: length of usage, amount, etc. also it depends a lot on how you approach it. if you plan for it, taper down to a small dose, switch to something weaker for a few days, then stop, it can be relatively painless, but that takes a lot of time, patience, and discipline that not everyone has. it's really hard to have like 300mg oc or something at your disposal and stilll only do like 40mg a day or whatever when you're tapering, but if u can, it seriously helps minimize w/d.