Analysis and Evaluation of Smoking Treatment With Cytisine

This study evaluates the real-world effectiveness of cytisine — a plant-derived medication used to help people quit smoking — in patients with moderate to severe nicotine addiction attending a smoking cessation program. **You may be eligible if...** - You are over 18 years old - You have been diagnosed with moderate to severe tobacco use disorder - Your doctor has prescribed cytisine as part of your quit-smoking treatment - You have attended your first follow-up check-up as scheduled **You may NOT be eligible if...** - You have a medical reason that prevents you from taking cytisine or nicotine receptor drugs - You are currently undergoing drug or radiation treatment for cancer - You are pregnant or breastfeeding - Objective assessment data about your smoking history is unavailable Talk to your doctor to see if this trial is right for you.