varenicline, Chantix (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

PREGNANCY: There are no adequate studies in pregnant women.

NURSING MOTHERS: It is not known whether varenicline is excreted in breast milk. Nursing mothers should consider discontinuing varenicline or breastfeeding because of the potential for adverse effects in the infant.

SIDE EFFECTS: The most common adverse effects of varenicline are nausea, sleep disturbance, constipation, flatulence, and vomiting. Headaches, abnormal dreams and taste disturbance also are frequent side effects of varenicline. Varenicline is not addictive and is not a controlled substance; however, some patients may experience irritability and sleep disturbance if varenicline is abruptly discontinued. Varenicline may worsen symptoms of underlying heart disease. Patients may experience psychiatric symptoms such as behavioral changes, agitation, depressed mood, and suicidal behavior during varenicline treatment. Patients should stop taking varenicline if psychiatric symptoms occur. Rare life threatening skin reactions and hypersensitivity reactions have been reported.

Reference: FDA Prescribing Information

Last Editorial Review: 7/18/2012

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