- Arm II: Participants receive one oral nicotine lozenge every 1-2 hours in weeks 3-8 (≥ 9 lozenges per day), one lozenge every 2-4 hours in weeks 9-11 (≥ 5 lozenges per day), and 1 lozenge every 4-8 hours in weeks 12-14 (≥ 3 lozenges per day).