Varenicline (Champix®) Special Investigation (Regulatory Post Marketing Commitment Plan)

Dosage form: tablet 0.5mg, tablet 1mg. The usual adult dosage for oral use is 0.5 mg once daily after eating on Days 1 to 3; 0.5 mg twice daily after eating in the morning and evening on Days 4 to 7, and 1 mg twice daily after eating in the morning and evening on Day 8 and thereafter. The drug should be administered to subjects for 12 weeks.