Your dose depends on how much you smoke. When you feel a tingle in your mouth, stop and put it in your cheek. When the tingling is gone, start chewing again. Do this over and over again until the tingle is gone – usually after about 30 minutes. For the first 6 weeks, you’ll chew one piece every 1 or 2 hours. Treatment should last around 12 weeks. If you feel the need to continue, talk to your doctor.