This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Chantix (Varenicline) and submitted to the FDA during the sample period of about a year. The information is not vetted and should not be considered as verified clinical evidence.
Reports by Event Outcome
All Cases (8032)
Death (210)
Life Threatening Events (44)
Disability (203)
Reports by Reaction Type
Depression (1644),
Anxiety (1344),
Abnormal Dreams (1126),
Nausea (1078),
Suicide Attempt (766),
Insomnia (654),
Aggression (608),
Drug Ineffective (604),
Suicidal Ideation (572),
Feeling Abnormal (516),
Malaise (423),
Intentional Overdose (421)
Below are a few examples of reports where side effects / adverse reactions may be related to Chantix (Varenicline). For a complete list or a specific selection of reports, please use the links above.
Possible Chantix side effects in 65 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 65 year old male, weighing 81.6 kg (179.6 pounds)
Reactions: Renal Function Test Abnormal, Drug Intolerance
Drug(s) suspected as cause:
Chantix
Dosage: 0.5 mg, 1x/day
Indication: Smoking Cessation Therapy
Start date: 2012-01-01
End date: 2012-01-01
Chantix
Dosage: unk
Start date: 2012-01-01
Epzicom
Dosage: 300 mg, daily
Indication: HIV Infection
End date: 2012-01-01
Possible Chantix side effects in 59 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 59 year old female, weighing 77.1 kg (169.6 pounds)
Reactions: Limb Discomfort, LIP Disorder, Headache
Drug(s) suspected as cause:
Chantix
Dosage: 1 mg, daily
Administration route: Oral
Start date: 2012-08-01
Chantix
Dosage: 0.5 mg, daily
Administration route: Oral
Indication: Smoking Cessation Therapy
Start date: 2012-08-14
End date: 2012-08-01
Chantix
Dosage: 1 mg, 2x/day
Administration route: Oral
Start date: 2012-08-01
End date: 2012-08-01
Possible Chantix side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Cough
Drug(s) suspected as cause:
Chantix
Dosage: unk
Administration route: Oral
Start date: 2012-07-01
End date: 2012-07-01
Chantix
Dosage: 0.5 mg, 1x/day
Administration route: Oral
Indication: Smoking Cessation Therapy
Start date: 2011-08-01
End date: 2012-01-01
Chantix
Dosage: 1 mg, 2x/day
Administration route: Oral
Start date: 2012-07-01
Possible Chantix side effects in 76 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 76 year old female, weighing 56.7 kg (124.7 pounds)
Reactions: Abdominal Discomfort, Negative Thoughts, Mood Altered, Nausea, Gastrointestinal Disorder, Depressed Mood
Drug(s) suspected as cause:
Chantix
Dosage: unk
Administration route: Oral
End date: 2012-08-01
Chantix
Dosage: 1 mg, 2x/day
Administration route: Oral
Chantix
Dosage: 0.5 mg, daily
Administration route: Oral
Indication: Smoking Cessation Therapy
Start date: 2011-01-01
Ibuprofen
Dosage: unk
Indication: Spinal Disorder
Other drugs received by patient: Lisinopril; Metoprolol Tartrate; Glipizide; Hydrochlorothiazide; Metformin Hydrochloride; Simvastatin
Possible Chantix side effects in 47 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 47 year old female, weighing 49.0 kg (107.8 pounds)
Reactions: Abnormal Dreams, Burning Sensation, Thinking Abnormal, Nausea, Trigeminal Neuralgia, Insomnia, Emotional Disorder, Multiple Sclerosis, Crying
Drug(s) suspected as cause:
Betaseron
Dosage: unk
Indication: Multiple Sclerosis
Start date: 2004-01-01
Betaseron
Indication: Trigeminal Neuralgia
Chantix
Dosage: unk
Administration route: Oral
Indication: Smoking Cessation Therapy
Chantix
Dosage: unk
Administration route: Oral
Chantix
Dosage: unk
Administration route: Oral
Neurontin
Dosage: 600 mg, daily
Administration route: Oral
Indication: Multiple Sclerosis
Start date: 2004-01-01
Neurontin
Indication: Trigeminal Neuralgia
Rebif
Dosage: 44 ug, 3x/week
Indication: Multiple Sclerosis
Start date: 2004-01-01
Rebif
Indication: Trigeminal Neuralgia
Other drugs received by patient: Hydrocodone; Estradiol
Possible Chantix side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Cheilitis, Urticaria
Drug(s) suspected as cause:
Chantix
Dosage: unk
Chantix
Dosage: 0.5 mg, 2x/day
Possible Chantix side effects in
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient:
Reactions: Drug Ineffective
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 26 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 26 year old male, weighing 79.4 kg (174.6 pounds)
Reactions: Abnormal Dreams, Arthralgia, Pain in Extremity, Muscle Fatigue, Feeling Abnormal
Drug(s) suspected as cause:
Chantix
Dosage: 0.5 mg, 1x/day
Administration route: Oral
Indication: Smoking Cessation Therapy
Start date: 2012-07-01
End date: 2012-07-01
Chantix
Dosage: 0.5 mg, 2x/day
Administration route: Oral
Start date: 2012-07-01
End date: 2012-07-12
Possible Chantix side effects in 80 year old male
Reported by a physician from Japan on 2012-08-27
Patient: 80 year old male
Reactions: Pneumonia
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in female
Reported by a physician from Egypt on 2012-08-27
Patient: female
Reactions: Retroperitoneal Fibrosis
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 53 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 53 year old male, weighing 63.5 kg (139.7 pounds)
Reactions: Poor Quality Sleep, Depression
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 41 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 41 year old male, weighing 74.8 kg (164.6 pounds)
Reactions: Abnormal Dreams, Diarrhoea, Abdominal Pain Upper
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 58 year old male
Reported by a physician from United Kingdom on 2012-08-27
Patient: 58 year old male
Reactions: Confusional State, Emotional Distress, Mental Disorder, Violence-Related Symptom, Emotional Disorder, Crying
Adverse event resulted in: life threatening event, disablity
Drug(s) suspected as cause:
Chantix
Other drugs received by patient: Rosuvastatin
Possible Chantix side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Hypersensitivity
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Abnormal Dreams
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 58 year old female
Reported by a physician from United Kingdom on 2012-08-27
Patient: 58 year old female, weighing 55.0 kg (121.0 pounds)
Reactions: Blood Alkaline Phosphatase Increased, Jaundice, Gamma-Glutamyltransferase Increased, Alanine Aminotransferase Increased, Blood Albumin Decreased
Drug(s) suspected as cause:
Chantix
Dosage: starter pack
Administration route: Oral
Start date: 2012-03-09
End date: 2012-01-01
Chantix
Dosage: 1 mg
Administration route: Oral
Start date: 2012-03-26
End date: 2012-04-13
Possible Chantix side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Abnormal Dreams, Pneumonia, Nausea, Sleep Disorder, Gastric Disorder
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Drug Administration Error, Feeling Abnormal
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 58 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 58 year old male, weighing 103.0 kg (226.6 pounds)
Reactions: Myocardial Infarction
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Chantix
Other drugs received by patient: Nexium; Lisinopril; Crestor; Ventolin HFA; Symbicort
Possible Chantix side effects in 55 year old female
Reported by a physician from Japan on 2012-08-27
Patient: 55 year old female
Reactions: Overwork, Road Traffic Accident, Sleep Disorder, Loss of Consciousness
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Abdominal Discomfort, Renal Pain
Drug(s) suspected as cause:
Chantix
Dosage: 0.5 mg, 1x/day
Administration route: Oral
Indication: Smoking Cessation Therapy
Start date: 2012-08-21
End date: 2012-08-01
Chantix
Dosage: 0.5 mg, 2x/day
Administration route: Oral
Start date: 2012-08-01
Possible Chantix side effects in 45 year old male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 45 year old male, weighing 72.6 kg (159.6 pounds)
Reactions: Malaise, Skin Exfoliation, Expired Drug Administered
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 49 year old female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: 49 year old female, weighing 86.2 kg (189.6 pounds)
Reactions: Abnormal Dreams
Drug(s) suspected as cause:
Chantix
Dosage: 0.5 mg, daily
Start date: 2012-01-01
End date: 2012-01-01
Chantix
Dosage: unk
Indication: Smoking Cessation Therapy
Possible Chantix side effects in 65 year old female
Reported by a physician from Denmark on 2012-08-27
Patient: 65 year old female
Reactions: Cardiac Disorder, Suicidal Ideation, Malaise, Arthropathy, Palpitations, Dizziness, Memory Impairment, Hallucination
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in male
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: male
Reactions: Drug Ineffective, Hallucination, Visual
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in
Reported by a physician from United States on 2012-08-27
Patient:
Reactions: Depression, Feeling Abnormal
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-27
Patient: female
Reactions: Renal Disorder
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 26 year old male
Reported by a consumer/non-health professional from Brazil on 2012-08-27
Patient: 26 year old male
Reactions: Physical Assault, Suicide Attempt, Depression, Aggression
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 41 year old male
Reported by a pharmacist from United States on 2012-08-24
Patient: 41 year old male, weighing 72.6 kg (159.6 pounds)
Reactions: Poor Quality Sleep, Insomnia
Drug(s) suspected as cause:
Chantix
Possible Chantix side effects in 54 year old female
Reported by a consumer/non-health professional from United States on 2012-08-24
Patient: 54 year old female, weighing 56.7 kg (124.7 pounds)
Reactions: Weight Decreased, Nausea, Gastritis, Abnormal Dreams, Malaise, Depression, Frustration, Crying
Drug(s) suspected as cause:
Chantix
Dosage: 0.5 mg daily
Indication: Smoking Cessation Therapy
Start date: 2012-03-29
End date: 2012-01-01
Chantix
Dosage: unk
Start date: 2012-01-01
End date: 2012-05-01
Chantix
Dosage: 0.5 mg, 2x/day
Start date: 2012-01-01
End date: 2012-01-01
Xanax
Dosage: 0.5 mg one to two times a day as needed
Indication: Anxiety
Start date: 2010-01-01
Xanax
Indication: Depression
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