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Chantix

Generic: Varenicline Tartrate

Rx only
Nicotinic receptor partial agonist✓ FDA-verified
View full FDA label ↗
Chantix is a medication that helps people quit smoking by making it easier to manage cravings and withdrawal symptoms. It works by partially stimulating the same brain receptors that nicotine does, while also blocking nicotine from attaching to those receptors, which helps reduce the pleasure of smoking. You start by taking 0.5 mg once daily for the first three days, then increase to 0.5 mg twice daily for the next four days, and finally take 1 mg twice daily for a total of 12 weeks. It's important to know that Chantix should not be used if you have a history of serious allergic reactions to it. Additionally, if you're taking alcohol, be aware that it may increase the effects of alcohol while on this medication.
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Uses

  • Smoking cessation aid.
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Dosage

Start taking CHANTIX one week before quitting smoking.
Days 1–3: 0.5 mg once daily.
Days 4–7: 0.5 mg twice daily.
Days 8–end of treatment: 1 mg twice daily.
Recommended treatment duration is 12 weeks, with an additional 12 weeks for successful quitters.
Always follow your doctor's specific instructions for your dose.
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Side effects

Common

nauseaabnormal dreamsconstipationflatulencevomitingneuropsychiatric symptoms

Serious

seizurescardiovascular eventshypersensitivity reactions
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Warnings

⚠ Important warnings

  • Serious neuropsychiatric events, including depression and suicidal thoughts, have been reported.
  • Patients should be monitored for changes in behavior or mood.
  • Use caution in patients with a history of psychiatric illness.
  • Consider dose reduction for those who cannot tolerate side effects.
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Drug interactions

  • Bupropionno effect on each other's levelsCaution
  • Transdermal nicotineincreased side effects reported.Caution

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Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).