DEAR DOCTOR K: I’ve tried to quit smoking on my own, but it never lasts. Could medications help? How do they work?
DEAR READER: Medicines can help, and they have improved “quit rates.” Although smoking is a particularly hard habit to break, you can do it. The proof: There are more ex-smokers in the United States today than there are smokers.
Nicotine, one of the many dangerous chemicals found in cigarettes, is what addicts you. It doesn’t damage your tissues; it just makes you want to smoke. Each hit of nicotine produces pleasure. But as nicotine leaves the body, you begin to experience uncomfortable withdrawal symptoms, and this prompts you to reach for another cigarette.
One type of quit-smoking medication is called nicotine replacement therapy. It delivers a low dose of nicotine into your bloodstream to ease or erase withdrawal symptoms. You start the nicotine replacement on the day you stop smoking. Instead of getting the nicotine your body continues to need from cigarettes, you get it from the replacement treatment. As your withdrawal symptoms decrease, you lower your dose, then gradually wean yourself off all nicotine, including NRT.
Two other quit-smoking medications do not contain nicotine; they act on the brain to decrease nicotine cravings, nicotine withdrawal symptoms, or both.
Varenicline (Chantix) and bupropion (Wellbutrin, Zyban) are prescription drugs. They imitate some effects of nicotine, cutting down on cravings and withdrawal symptoms. So if you slip and have a cigarette, you will experience less of a reward.
The U.S. Food and Drug Administration has reported that both varenicline and bupropion may, in a few people, trigger thoughts of suicide or actual suicide attempts. Any person starting on these treatments, and their friends and family, should look for changes in mood and behavior.
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