About vareniclin e
Partial nicotinic receptor agonist
Used for
- Helps adults stop smoking by reducing cravings and withdrawal symptoms.
Usual adult dose
Usually starts at 0.5 mg once daily, increasing over one week to 1 mg twice daily, for 12 weeks.
Common side effects
- Nausea
- Abnormal dreams or trouble sleeping
- Headache
- Constipation
Important warnings
- Mood or behavior changes, depression, or suicidal thoughts have been reported.
- Use caution with seizure history or severe kidney problems.
- Stopping smoking can change the effects of some medicines.
- May cause dizziness or sleepiness; driving ability can be affected.
Pregnancy
Not usually recommended; safety information is limited. Smoking cessation options should be discussed with a healthcare professional.
Breastfeeding
Unknown whether varenicline enters breast milk; use is generally not recommended during breastfeeding.
Interactions
- Few clinically significant drug interactions are known.
- Smoking cessation may alter levels of medicines such as theophylline, warfarin, and insulin.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.