Study to determine the safety and effectiveness of Ariva® Silver Wintergreen lozenge on reducing craving for a cigarette in daily smokers.

Each subject will be given an Ariva® Silver Wintergreen lozenge or a Silver Wintergreen lozenge, which contains only silver salt, on a random basis.

Once the lozenge has dissolved in the mouth, subjects will smoke one of their own cigarettes, and will answer questions about the experience and their craving for a cigarette.

After a washout period, each subject will repeat the steps with the second type of lozenge.

Inclusion Criteria:

• healthy adult smoker
• smoking for at least 5 years
• smoking at least one (1) pack of cigarettes a day
• interest in quitting smoking

Exclusion Criteria:

• known allergy to silver or silver salts
• pregnant or breast-feeding
• current drug or alcohol abuse, and/or history of drug or alcohol dependence within 3 months of study