Varenicline 0.5 mg tablets are a medication primarily used to help individuals quit smoking. These tablets are taken orally and are often part of a comprehensive smoking cessation program. The typical dosage regimen starts with 0.5 mg once daily for the first three days, followed by 0.5 mg twice daily for the next four days. After this initial period, a maintenance dose of 1 mg twice daily is usually prescribed. It's important to follow the dosing instructions provided by your healthcare provider.