Comment by dns_snek

I used to vape and I had the worst time quitting nicotine. I tapered down to around 25% of my usual daily intake over the period of about 3 months before I decided to quit for good. Even then, for about 3 weeks I felt incredibly tired all the time, yet I couldn't sleep, and I felt borderline mentally retarded... it was really bad. It took me about 3 months to feel more or less normal again, and cravings completely went away when I was properly diagnosed with ADHD and started medication about a year later.