Yes!! In fact, what I would recommend from my experience with Chantix is take 1/2 in the morning and a full pill right before you go to bed when you start taking 1mg 2x a day.. It made me so sick, vomiting sick that I had to cut my morning dose down. The night dose, because I took it before I slept, had no effect on me. Also, you have only been on this for 5 days. It took me several weeks before my body got used to this drug. After 2 weeks of nausea I cut down to the above recommendation. Worked like a dream. Did that for months and just recently cut down to only taking a pill at night before bed. Works wonders. Haven't smoked for months now and don't have the urge or desire.
Good luck to you. I didn't think I could do it and am so proud of myself, with the help of Chantix of course 🙂