Varenicline Tablet Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Abnormal Dreams
  • Chronic Trouble Sleeping
  • Constipation
  • Feel Like Throwing Up
  • Gas
  • Head Pain
  • Throwing Up

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Angina

If experienced, these tend to have a Less Severe expression

  • Acute Infection Of The Nose, Throat Or Sinus
  • Drowsiness
  • Dry Mouth
  • Excessive Sweating
  • Feeling Weak
  • Gastroesophageal Reflux Disease
  • Increased Hunger
  • Indigestion
  • Intense Abdominal Pain
  • Itching
  • Loss Of Appetite
  • Low Energy
  • Nightmares
  • Not Feeling Well
  • Rash
  • Runny Nose
  • Sluggishness
  • Trouble Breathing

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Heart Rhythm
  • Abnormal Liver Function Tests
  • Accidental Injury
  • Acute Inflammation Of The Pancreas
  • Anemia
  • Behaving With Excessive Cheerfulness And Activity
  • Blood Clot
  • Diabetes
  • Erythema Multiforme
  • Giant Hives
  • Having Thoughts Of Suicide
  • Heart Attack
  • High Blood Pressure
  • Hypersensitivity Drug Reaction
  • Problems Metabolizing Alcohol
  • Psychosis Caused By A Drug
  • Seizures
  • Stevens-Johnson Syndrome
  • Stroke
  • Suicidal
  • Thoughts Of Hurting Or Killing Others
  • Transient Ischemic Attack
  • Unconscious

If experienced, these tend to have a Less Severe expression

  • Acne
  • Aggressive Behavior
  • Agitation
  • Altered Interest In Having Sexual Intercourse
  • Asthma
  • Backache
  • Cannot Focus Thoughts
  • Chest Pain
  • Cramps
  • Delusions
  • Depression
  • Diarrhea
  • Disturbance Of Attention
  • Dizzy
  • Drug-Induced Hot Flash
  • Dry Skin
  • Eczema
  • Excess Urination
  • Feeling Anger Toward Something
  • Feeling Anxious
  • Flu-Like Symptoms
  • Frequent Urination
  • Hallucination
  • Heart Throbbing Or Pounding
  • High Blood Sugar
  • Hives
  • Inability To Have An Erection
  • Inflammation Of The Nose Due To An Allergy
  • Joint Pain
  • Mood Changes
  • Muscle Pain
  • Nosebleed
  • Panic Disorder
  • Paranoia
  • Peripheral Vascular Disease
  • Problem Behavior
  • Problem With Periods
  • Problems With Eyesight
  • Psoriasis
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Sleep Disorder
  • Sleepwalking
  • Sun-Sensitive Skin
  • Swollen Lymph Nodes
  • Taste Problems
  • Temporary Redness Of Face And Neck
  • Toothache
  • Urination During The Night
  • Visible Water Retention
  • Weight Gain

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.