Varenicline dihydrochloride（Cat No.:I037967）is a prescription medication primarily used as a smoking cessation aid. It acts as a partial agonist at nicotinic acetylcholine receptors in the brain, stimulating low-level dopamine release to reduce cravings and withdrawal symptoms associated with nicotine addiction. By binding to these receptors, varenicline also blocks nicotine from attaching, thus reducing the rewarding effects of smoking. It has been shown to increase the chances of quitting smoking compared to placebo or other therapies. Varenicline dihydrochloride is commonly prescribed alongside behavioral support to help individuals quit smoking.