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Chantix (Varenicline) is used as a smoking cessation medicine or treatment. Chantix is used together with behavior modification and counseling support to help you stop smoking cigarettes. Chantix works in the brain to block the pleasurable effects of smoking. This helps to decrease your desire to keep smoking.
Read Chantix Medication Guide...Synonyms: Champix;
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What is Chantix (Varenicline)?
Chantix is a smoking cessation medicine. It is used together with behavior modification and counseling support to help you stop smoking.
Chantix may also be used for other purposes not listed in this medication guide.
What is the most important information I should know about varenicline?
Before using varenicline, tell your health care provider if you have kidney disease, or a history of mental illness.
Use this medication exactly as it was prescribed for you. Do not use it in larger amounts or for longer than recommended by your doctor. Follow the directions on your prescription label.
Chantix can cause drowsiness, which may impair your thinking or reactions. You may also have mood or behavior changes when you quit smoking. Until you know how varenicline and the smoking cessation process is going to affect you, Be careful if you drive or do anything that requires you to be cautious and alert. Stop using this medication and call your doctor at once if you have any mood or behavior changes, or if you feel agitated, depressed, or have thoughts about suicide or hurting yourself.
Less serious side effects are more likely, and you may have none at all. Chantix can cause persistent nausea for up to several months. Talk to your doctor about any side effect that seems unusual or is especially bothersome.
If you miss a dose, use the medication as soon as you remember. If it is almost time for the next dose, skip the missed dose and wait until your next regularly scheduled dose. Do not use extra medicine to make up the missed dose.
There may be other drugs that can interact with varenicline. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
What should I discuss with my health care provider before taking varenicline?
Before using varenicline, tell your doctor if you have kidney disease, or a history of mental illness. FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. It is not known whether varenicline passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. Do not give this medicine to anyone younger than 18 years old.
What happens if I miss a dose?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose. Be sure to take the medicine after eating.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of a varenicline overdose are unknown.
What should I avoid while taking varenicline?
Chantix can cause drowsiness, which may impair your thinking or reactions. You may also have mood or behavior changes when you quit smoking. Until you know how varenicline and the smoking cessation process are going to affect you, Be careful if you drive or do anything that requires you to be cautious and alert.
What other drugs will affect varenicline?
After you stop smoking, the doses of any medications you are using may need to be adjusted. Tell your doctor about all other medicines you use, especially:
- insulin;
- a blood thinner such as warfarin (Coumadin); or
- theophylline (Respbid, Theobid, Theoclear, Theo-Dur, Uniphyl).
This list is not complete and there may be other drugs that can interact with or be affected by varenicline. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.