I don't really notice withdrawal. I do have cravings for about a week then they go away. What I really notice when I'm on a keto diet is if I have a cheat meal with carbs I get a kind of high feeling in my brain. Seems like some kind of dopamine response because I equate the feeling to how I felt taking Wellbutrin once (which has a dopamine effect). Drinking alcohol has even a worse effect. Where I could normally drink 4-5 rum and coke before really feeling drunk. Now two of them will make me drunk enough that I wouldn't drive.