Varenicline Brand Name
The brand name of varenicline is Chantix (in the United States) and Champix (in other countries including the UK, Europe, and Japan). 1, 2, 3, 4, 5
Key Information About Varenicline
Mechanism and Indication: Varenicline is a nicotinic receptor partial agonist specifically indicated as an aid to smoking cessation treatment 2. It works as a partial agonist at the α4β2 nicotinic acetylcholine receptor, providing dual action by both partially stimulating these receptors (reducing withdrawal symptoms) while simultaneously blocking nicotine from cigarettes from binding to them 2.
Standard Dosing:
- Initiate dosing 1-2 weeks prior to quitting
- Days 1-3: 0.5 mg orally once daily
- Days 4-7: 0.5 mg orally twice daily
- Week 2-12: 1 mg orally twice daily, if tolerated 1
Clinical Efficacy: Varenicline is recognized as the most effective single pharmacotherapy option for smoking cessation, increasing odds of cessation by almost 3-fold compared to placebo (OR 2.88; 95% CI 2.40-3.47) 1. It demonstrates superior efficacy compared to bupropion (OR 1.59) and single forms of nicotine replacement therapy (OR 1.57) 1.