Smoking cessation drugs are useful to a certain extent, under normal circumstances taking smoking cessation drugs can inhibit the craving for smoking, the commonly used clinical smoking cessation drugs are varenicline tartrate tablets, bupropion hydrochloride extended-release tablets and so on. Varenicline tartrate tablets can block the binding of nicotine and receptors, which can effectively eliminate and alleviate the addiction to smoking, and then achieve the purpose of quitting smoking. Bupropion Hydrochloride Extended-Release Tablets are mainly used to assist in smoking cessation, which will cause a certain inhibition of acetylcholine receptors, thus playing a role in assisting smoking cessation. However, both are prescription drugs and must be used under the guidance of a doctor, not without authorization. At the same time to quit smoking can not rely solely on drugs, smokers must have the determination to quit smoking, control themselves, and ultimately quit smoking.