When should I call the doctor if I am taking varenicline?

Stacy Wiegman, PharmD

Pharmacy

If you are taking varenicline (Chantix), call your doctor if you experience any of the following signs or symptoms:

fever or chills
bluish tint to the skin
mood swings, anxiety or nervousness
abnormal or suicidal thoughts
red skin lesions or peeling of skin
ulcers on the skin
severe acne
dizziness, drowsiness and an inability to concentrate

Call 911 for:

a severe allergic reaction with cough, wheezing, chest constriction or skin itching
sudden swelling of the tongue, face, lips, throat or ear lobes

Continue Learning about Dependency Agent

Donna Hill Howes, RN

Varenicline (Chantix) is approved by the FDA to help people quit smoking. It is thought to reduce ni...

Dr. Frank T. Leone, MD

Varenicline can be used to help you stop smoking, as it reduces the urge to smoke. However, it may c...

Donna Hill Howes, RN

Studies show that people who use varenicline at the recommended dose of 2 mg a day are 3 times more ...

Donna Hill Howes, RN

Bupropion and varenicline have been shown to help people with schizophrenia quit smoking. But relaps...

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.

Dependency Agent

Medications are an important treatment for patients who are trying to stop their dependencies on alcohol, tobacco, opioids and other substances. These medications suppress withdrawal symptoms and prevent relapse and are effective when combined with counseling.

Learn More