Nicotinell TTS 20mg patches contain nicotine, a partial agonist at nicotinic cholinergic receptors. These patches are used as an aid to smoking cessation in adults. Nicotine replacement therapy helps reduce withdrawal symptoms and cravings associated with quitting smoking. By delivering a controlled amount of nicotine through the skin, Nicotinell TTS patches help individuals gradually reduce their dependence on cigarettes. It is essential to follow a comprehensive smoking cessation program while using these patches to maximize the chances of successfully quitting smoking.