Risperdal Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • A Change In Vision
  • A Feeling Of Restlessness With Inability To Sit Still
  • A Type Of Abnormal Movement Disorder Called Dyskinesia
  • A Type Of Movement Disorder Called Parkinsonism
  • Extrapyramidal Disease, A Type Of Movement Disorder

If experienced, these tend to have a Less Severe expression

  • A Common Cold
  • A Skin Rash
  • A Sore Throat
  • A Stuffy And Runny Nose
  • Abnormal Muscle Movements
  • Abnormal Sexual Function
  • Agitation
  • Altered Interest In Having Sexual Intercourse
  • Anxious Feelings
  • Blurred Vision
  • Changes In Appetite
  • Constipation
  • Cough
  • Diarrhea
  • Difficulty Sleeping
  • Dizziness
  • Drowsiness
  • Dry Mouth
  • Excessive Saliva Production
  • Headache
  • Increased Hunger
  • Indigestion
  • Inducing Of A Relaxed Easy State
  • Involuntary Leakage Of Urine
  • Itching
  • Low Energy
  • Mental Status Changes
  • Muscle Tremors
  • Nausea
  • Nervousness
  • Reactions At The Site Of The Injection
  • Runny Nose
  • Stuffy Nose
  • Throat Irritation
  • Vomiting
  • Weight Gain

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • High Blood Sugar
  • Low Blood Pressure
  • Orthostatic Hypotension, A Form Of Low Blood Pressure

If experienced, these tend to have a Less Severe expression

  • A High Prolactin Level
  • A Problem With Menstrual Periods
  • Backache
  • Breastmilk Production Not Associated With Childbirth Or Nursing
  • Confusion
  • Difficulty Concentrating
  • Generalized Weakness
  • Heart Throbbing Or Pounding
  • High Amount Of Triglyceride In The Blood
  • High Cholesterol
  • Joint Pain
  • Loss Of Muscle Coordination
  • Muscle Pain
  • Muscle Weakness
  • Nosebleed
  • Seborrhea
  • Stomach Cramps
  • Trouble Breathing

RARE side effects


If experienced, these tend to have a Severe expression

  • A Clot In The Lung
  • A Condition With Muscle Tissue Breakdown Called Rhabdomyolysis
  • A Disorder With Excess Antidiuretic Hormone Called Syndrome Of Inappropriate Antidiuretic Hormone
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
  • A Skin Disorder With Blistering And Peeling Skin Called Toxic Epidermal Necrolysis
  • A Stroke
  • A Transient Ischemic Attack, A Type Of Stroke That Lasts Only A Few Minutes
  • A Tumor Of The Pituitary Gland
  • A Type Of Allergic Reaction Called Angioedema
  • A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
  • A Type Of Slowed Heart Rhythm Disorder Called Heart Block
  • A Yellowing Of The Eyes Or Skin From Buildup Of Bilirubin Called Jaundice
  • Abnormal Heart Electrical Signals
  • Abnormal Liver Function Tests
  • Accidental Falls
  • Anemia
  • Atrial Fibrillation
  • Atrioventricular Block, A Type Of Slow Heart Rhythm Disorder
  • Blockage Of The Stomach Or Intestine
  • Blocked Bowels With Decreased Peristaltic Movement
  • Cerebral Ischemia, A Lack Of Blood Supply To The Brain
  • Decreased Alertness Or Consciousness
  • Decreased Blood Platelets
  • Diabetes
  • Fever
  • Floppy Iris During Eye Surgery
  • High Blood Pressure
  • Low Body Temperature
  • Low Levels Of A Type Of White Blood Cell Called Neutrophils
  • Low Levels Of White Blood Cells
  • Neuroleptic Malignant Syndrome, A Reaction Characterized By Fever, Muscle Rigidity And Confusion
  • Pancreatitis
  • Pneumonia
  • Pneumonia Due To Accidental Inhalation Of Vomit
  • Priapism, A Prolonged Erection Of The Penis
  • Problems With Food Passing Through The Esophagus
  • Seizures
  • Sinus Tachycardia, A Type Of Fast Heart Rate
  • Sleep Apnea
  • Slow Heartbeat
  • Swelling Of The Tongue
  • Tardive Dyskinesia, A Disorder Characterized By Involuntary Movements Of The Face, Mouth And Tongue
  • The Flu
  • Thrombotic Thrombocytopenic Purpura, A Type Of Blood Disorder
  • Undue Retention Of Water With Sodium Depletion
  • Very Low Levels Of Granulocytes, A Type Of White Blood Cell

If experienced, these tend to have a Less Severe expression

  • A Change In The Ability To Pay Attention
  • A Decrease In Sharpness Of Vision Called Reduced Visual Acuity
  • A Sleep Disorder
  • A Type Of Speech Disorder Called Dysarthria
  • A Type Of Stomach Irritation Called Gastritis
  • Absence Of Menstrual Periods
  • Accumulation Of Fluid In The Tissues Of The Eyelid
  • An Earache
  • An Inability To Completely Empty The Bladder
  • An Increased Amount Of Blood In The Lining Of The Eye Called Conjunctival Hyperemia
  • An Infection Of The Ear
  • Breast Pain
  • Chest Pains Unrelated To Heart Problems
  • Complex Sleep Behaviors Like Eating Or Driving While Asleep
  • Crusting Of The Eyelid
  • Decreased Appetite
  • Difficulty Swallowing
  • Enlarged Breasts
  • Fainting
  • Fluid Retention In The Legs, Feet, Arms Or Hands
  • Gas
  • Hair Loss
  • Hives
  • Inflammation Of The Lips
  • Involuntary Eyelid Twitching
  • Joint Stiffness
  • Large Purple Or Brown Skin Blotches
  • Lip Swelling
  • Low Blood Sugar
  • Muscle Spasm
  • Numbness
  • Pain In The Muscles Or Bones
  • Problems With Ejaculation
  • Retrograde Ejaculation
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Sleepwalking
  • Taste Impairment
  • The Inability To Control A Bowel Movement
  • Urinary Tract Infection
  • Visible Water Retention
  • Visual Sensitivity To Light

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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.