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Varenicline: uses, side effects & brands
Varenicline reduces cravings and the pleasure of smoking to help you quit. It belongs to the Smoking cessation & weight group. These help people stop smoking or manage weight.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Smoking cessation & weight |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Helping adults stop smoking
- Reducing cravings and withdrawal
- Reducing the satisfaction from smoking
Common brand names
- India: Champix
- Worldwide: Chantix, Champix
Common side effects
- Nausea
- Unusual or vivid dreams
- Trouble sleeping
- Headache
Before taking it — precautions
- Tell your doctor about kidney disease
- Tell your doctor about any history of mental illness or seizures
- Take after food with water to reduce nausea; be careful driving at first
When to see a doctor urgently
- Severe mood change, agitation or thoughts of self-harm (urgent)
- Facial swelling or severe skin rash (urgent)
- A seizure (fit) (urgent)
Not a prescription — no dose shown. The right dose of varenicline depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
When should I stop smoking?
You usually set a quit date about a week after starting varenicline, though some people cut down more gradually.
Is it better than nicotine patches?
Studies show varenicline is generally one of the most effective medicines for quitting, but combined NRT is also effective.
Why do I have strange dreams?
Vivid dreams are common. Taking the evening dose earlier may help.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.