Hi LadyBug: Yes, I had constipation at the very beginning. I took Correctol (2 of them at one time) - an OCT - and everything got all better. But....I also changed my eating habits. I've always detested brocilli and cauliflower, but I've been eating it (raw) ever since I quit and have actually come to like it. I replaced junk food with bulkier stuff. You might want to add more (right much more) high fiber foods.
And yes...I was like a zombie for 11 days when starting the Chantix. Things changed on the afternoon of the 11th and I've never felt better in my life.
Let us know how things are going. Good Luck