Chantix

Generic Name: Varenicline

  • What is Chantix?

    Chantix is a prescription medicine to help adults stop smoking.

  • What is the most important information I should know about Chantix?

    Your body may undergo changes if you stop smoking (with or without Chantix). These changes may alter the dosage of other medications you are taking. If you experience agitation, depressed mood, changes in behavior that are not typical of you, or if you develop suicidal behavior, stop taking Chantix and notify your doctor immediately.

    Tell your doctor if you have or ever had depression before beginning Chantix therapy.

    If you start to develop red patches on your skin or develop swelling anywhere on your face and neck, stop taking Chantix at once and contact your doctor immediately as it may be a medical emergency.

  • Who should not take Chantix?

    Do not take Chantix if you are allergic to any of its ingredients.

  • What should I tell my doctor before I take the first dose of Chantix?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Chantix. Also, talk to your doctor about your entire medical history, especially if you are using insulin, asthma medicine, or blood thinners. Also tell your doctor if you have ever had depression or other mental health problems, or if you have kidney problems or receive kidney dialysis, since this may require a lower dose.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults: From Day 1 to Day 3, the usual dose of Chantix is one white tablet (0.5 milligrams [mg]). From Day 4 to Day 7, the dose increases to two white tablets, one in the morning and one at night. Day 8 to the end of treatment consists of two blue tablets (1 mg each), one in the morning and one at night.

  • How should I take Chantix?

    First, choose a date when you will stop smoking. Start taking Chantix 7 days before your quit date, as this lets Chantix build up in your body. You can keep smoking during this time. Be sure to stop smoking on your quit date, and continue to take Chantix as directed.

    Take Chantix after eating and with a full glass of water.

  • What should I avoid while taking Chantix?

    Avoid smoking after the seventh day of taking Chantix.

    Use caution when driving or operating machinery until you know how quitting smoking with Chantix may affect you.

  • What are possible food and drug interactions associated with Chantix?

    No significant interactions have been reported with Chantix at this time. However, always tell your doctor about any medicines you take, including over-the-counter drugs, vitamins, and herbal supplements.

  • What are the possible side effects of Chantix?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: changes in sleeping pattern (trouble sleeping or unusual, vivid, and strange dreams), constipation, gas, nausea, vomiting

  • Can I receive Chantix if I am pregnant or breastfeeding?

    The effects of Chantix during pregnancy and breastfeeding are unknown. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Chantix?

    If you miss a dose, take it as soon as you remember. If it is close to the time for your next dose, wait and take your next regular dose. Do not take two doses at once.

  • How should I store Chantix?

    Store at room temperature.

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I'm Beth Isaac, PharmD. Welcome to PDR Health!

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