Viagra Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Backache
  • Dizziness
  • Head Pain
  • Indigestion
  • Nausea
  • Nosebleed
  • Stuffy Nose
  • Temporary Redness Of Face And Neck
  • Visible Water Retention

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • A Change In Vision
  • A Common Cold

If experienced, these tend to have a Less Severe expression

  • A Skin Rash
  • Diarrhea
  • Difficulty Sleeping
  • Fever
  • Flu-Like Symptoms
  • Inflammation Of The Nose
  • Inflammation Of The Tissue Lining The Sinuses
  • Skin Redness
  • Trouble Breathing
  • Urinary Tract Infection

RARE side effects


If experienced, these tend to have a Severe expression

  • A Blood Clot In The Brain
  • A Condition Where The Body Is Unable To Maintain Adequate Blood Flow Called Shock
  • A Heart Attack
  • A Hemorrhage In The Brain
  • A Low Supply Of Oxygen Rich Blood To The Heart
  • A Sudden Vision Loss Due To Loss Of The Blood Supply To The Front Of The Optic Nerve
  • A Transient Ischemic Attack, A Type Of Stroke That Lasts Only A Few Minutes
  • Abnormal Liver Function Tests
  • An Abnormal Increase In Muscle Tone
  • An Increased Sodium Level In The Blood
  • Anemia
  • Angina, Or Chest Pain Due To Partial Blockage Of Blood Flow In The Heart Arteries
  • Atrioventricular Block, A Type Of Slow Heart Rhythm Disorder
  • Bleeding From The Lungs
  • Bleeding From The Retina
  • Bleeding In The Eye
  • Blood Coming From Anus
  • Cardiomyopathy, A Disease Of The Heart Muscle
  • Chest Pain
  • Chronic Heart Failure
  • Clouding Of The Lens Of The Eye Called Cataracts
  • Complete Stoppage Of The Heart
  • Depression
  • Fainting
  • Fast Heartbeat
  • Fluid Retention In The Legs, Feet, Arms Or Hands
  • Hearing Loss
  • Heart Throbbing Or Pounding
  • High Amount Of Uric Acid In The Blood
  • High Blood Pressure
  • High Blood Sugar
  • Increased Pressure In The Eye
  • Inflammation Of The Bladder
  • Inflammation Of The Esophagus
  • Involuntary Leakage Of Urine
  • Loss Of Muscle Coordination
  • Low Blood Pressure
  • Low Blood Sugar
  • Low Levels Of White Blood Cells
  • Orthostatic Hypotension, A Form Of Low Blood Pressure
  • Pain
  • Poor Control Of Diabetes
  • Priapism, A Prolonged Erection Of The Penis
  • Retinal Edema
  • Rupture Of A Tendon
  • Seizures
  • Separation Of The Vitreous From The Retina In The Eye
  • Skin Rash With Sloughing
  • Ventricular Arrhythmias, A Type Of Abnormal Heart Rhythm
  • Vision Loss

If experienced, these tend to have a Less Severe expression

  • A Migraine Headache
  • A Painful, Red Or Swollen Tongue
  • A Skin Ulcer
  • A Type Of Joint Disorder Due To Excess Uric Acid In The Blood Called Gout
  • A Type Of Stomach Irritation Called Gastritis
  • Abnormal Dreams
  • Abnormal Sexual Function
  • Accumulation Of Fluid Or Edema In The Male Genitals
  • An Earache
  • An Increase In The Amount Of Phlegm
  • An Increased Need To Urinate Often
  • Anxious Feelings
  • Arthritis
  • Asthma
  • Bloody Urine
  • Bone Pain
  • Brief Episodes Of Memory Loss, Followed By The Return Of The Memories
  • Bronchitis
  • Chills
  • Contact Dermatitis, A Type Of Skin Rash That Occurs From Contact With An Offending Substance
  • Cough
  • Difficulty Swallowing
  • Dilated Pupils
  • Drowsiness
  • Dry Eye
  • Dry Mouth
  • Enlarged Breasts
  • Excessive Sweating
  • Excessive Thirst
  • Eye Pain
  • Generalized Weakness
  • Hives
  • Increased Sensitivity Of The Skin To The Sun
  • Inflammation Of The Covering Of A Tendon
  • Inflammation Of The Gums
  • Inflammation Of The Large Intestine
  • Inflammation Of The Lining Of A Joint
  • Inflammation Of The Lining Of The Stomach And Intestines
  • Intense Abdominal Pain
  • Itching
  • Laryngitis
  • Muscle Pain
  • Muscle Tremors
  • Muscle Weakness
  • Nerve Pain
  • Numbness
  • Numbness And Tingling
  • Orgasm Problems
  • Peripheral Sensory Nerve Disorder
  • Pink Eye
  • Problems With Ejaculation
  • Puffy Face From Water Retention
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Stomatitis, A Condition With Painful Swelling And Sores Inside The Mouth
  • Swelling Of The Testicles
  • Throat Irritation
  • Urination During The Night
  • Visual Sensitivity To Light
  • Vomiting
  • Weak Reflexes

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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.