Fanapt Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Aggressive Behavior
  • Altered Interest In Having Sexual Intercourse
  • Dizziness
  • Extrapyramidal Disease, A Type Of Movement Disorder
  • Fast Heartbeat
  • Orthostatic Hypotension, A Form Of Low Blood Pressure

If experienced, these tend to have a Less Severe expression

  • Drowsiness
  • Dry Mouth
  • Involuntary Leakage Of Urine
  • Low Energy
  • Muscle Pain
  • Muscle Spasm
  • Nausea
  • Pink Eye
  • Stuffy Nose
  • Weight Gain

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • A Feeling Of Restlessness With Inability To Sit Still
  • A Skin Rash
  • Absence Of Menstrual Periods
  • Blurred Vision
  • Breastmilk Production Not Associated With Childbirth Or Nursing
  • Low Blood Pressure
  • Muscle Tremors
  • Trouble Breathing

If experienced, these tend to have a Less Severe expression

  • A Common Cold
  • A High Prolactin Level
  • Confusion
  • Diarrhea
  • Excessive Fat In The Blood
  • Heart Throbbing Or Pounding
  • Intense Abdominal Pain
  • Joint Pain
  • Nervousness
  • The Inability To Have An Erection
  • Throat Irritation

RARE side effects


If experienced, these tend to have a Severe expression

  • A Feeling Of Throat Tightness
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Stroke
  • A Type Of Allergic Reaction Called Angioedema
  • A Type Of Movement Disorder Called Parkinsonism
  • Abnormally Long Or Heavy Periods
  • Chronic Heart Failure
  • Delusions
  • Diabetes
  • Fainting
  • Feelings Of Hostility
  • Fever
  • Gallstones
  • High Blood Sugar
  • Low Levels Of A Type Of White Blood Cell Called Neutrophils
  • Low Levels Of White Blood Cells
  • Manic Behavior
  • Memory Loss
  • Mental Status Changes
  • Mood Changes
  • Neuroleptic Malignant Syndrome, A Reaction Characterized By Fever, Muscle Rigidity And Confusion
  • Priapism, A Prolonged Erection Of The Penis
  • Problems With Food Passing Through The Esophagus
  • Prolonged QT Interval On EKG
  • Reduced Blood Flow To The Brain Causing Some Brain Cells To Die Or Function Poorly
  • Tardive Dyskinesia, A Disorder Characterized By Involuntary Movements Of The Face, Mouth And Tongue
  • Very Low Levels Of Granulocytes, A Type Of White Blood Cell
  • Visible Water Retention

If experienced, these tend to have a Less Severe expression

  • A Problem With Menstrual Periods
  • A Type Of Stomach Irritation Called Gastritis
  • Abnormal Muscle Movements
  • Accumulation Of Fluid In The Tissues Of The Eyelid
  • An Increased Amount Of Blood In The Lining Of The Eye
  • Anemia
  • Changes In Appetite
  • Clouding Of The Lens Of The Eye Called Cataracts
  • Dry Eye
  • Excessive Saliva Production
  • Hives
  • Inflammation Of The Nose
  • Itching
  • Nosebleed
  • Numbness And Tingling
  • Nystagmus, A Condition With Involuntary Eye Movements
  • Puffy Face From Water Retention
  • Retrograde Ejaculation
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Stomatitis, A Condition With Painful Swelling And Sores Inside The Mouth
  • Swelling Inside The Mouth
  • Weight Loss

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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.