VIAGRA Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

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    If experienced, these tend to have a Less Severe expression i

    • stuffy nose
    • indigestion
    • backache
    • dizziness
    • visible water retention
    • temporary redness of face and neck
    • headache
    • nosebleed
    • nausea

    INFREQUENT side effects

    If experienced, these tend to have a Severe expression i

    • a change in vision
    • a common cold

    If experienced, these tend to have a Less Severe expression i

    • a stuffy and runny nose
    • inflammation of the tissue lining the sinuses
    • urinary tract infection
    • erythema or redness of skin or mucous membrane
    • difficulty sleeping
    • fever
    • flu-like symptoms
    • a skin rash
    • trouble breathing
    • diarrhea

    RARE side effects

    If experienced, these tend to have a Severe expression i

    • poor control of diabetes
    • low blood sugar
    • an increased sodium level in the blood
    • anemia
    • low levels of white blood cells
    • depression
    • bleeding from the retina
    • increased pressure in the eye
    • clouding of the lens of the eye called cataracts
    • vision loss
    • separation of the vitreous from the retina in the eye
    • bleeding in the eye
    • hearing loss
    • high blood pressure
    • a heart attack
    • angina, a type of chest pain
    • a low supply of oxygen rich blood to the heart
    • cardiomyopathy, a disease of the heart muscle
    • atrioventricular block, a type of slow heart rhythm disorder
    • complete stoppage of the heart
    • ventricular arrhythmias, a type of abnormal heart rhythm
    • chronic heart failure
    • a hemorrhage in the brain
    • a blood clot in the brain
    • a transient ischemic attack, a type of stroke that lasts only a few minutes
    • orthostatic hypotension, a form of low blood pressure
    • low blood pressure
    • inflammation of the esophagus
    • blood coming from anus
    • inflammation of the bladder
    • priapism, a prolonged erection of the penis
    • skin rash with sloughing
    • rupture of a tendon
    • an abnormal increase in muscle tone
    • fainting
    • seizures
    • pain
    • loss of muscle coordination
    • fluid retention in the legs, feet, arms or hands
    • heart throbbing or pounding
    • a condition where the body is unable to maintain adequate blood flow called shock
    • chest pain
    • involuntary leakage of urine
    • high amount of uric acid in the blood
    • high blood sugar
    • abnormal liver function tests
    • a sudden vision loss due to loss of the blood supply to the front of the optic nerve
    • bleeding from the lungs
    • retinal edema
    • fast heartbeat

    If experienced, these tend to have a Less Severe expression i

    • a type of joint disorder due to excess uric acid in the blood called gout
    • abnormal sexual function
    • problems with ejaculation
    • a migraine headache
    • visual sensitivity to light
    • pink eye
    • dry eye
    • dilated pupils
    • eye pain
    • ringing in the ears
    • an earache
    • throat irritation
    • laryngitis
    • bronchitis
    • asthma
    • inflammation of the gums
    • dry mouth
    • stomatitis, a condition with painful swelling and sores inside the mouth
    • a painful, red or swollen tongue
    • a type of stomach irritation called gastritis
    • inflammation of the large intestine
    • inflammation of the lining of the stomach and intestines
    • bloody urine
    • swelling of the testicles
    • enlarged breasts
    • increased sensitivity of the skin to the sun
    • contact dermatitis, a type of skin rash that occurs from contact with an offending substance
    • itching
    • a skin ulcer
    • hives
    • arthritis
    • inflammation of the covering of a tendon
    • muscle weakness
    • muscle pain
    • nerve pain
    • bone pain
    • drowsiness
    • sensation of spinning or whirling
    • excessive sweating
    • chills
    • muscle tremors
    • numbness
    • puffy face from water retention
    • excessive thirst
    • cough
    • an increase in the amount of phlegm
    • vomiting
    • difficulty swallowing
    • an increased need to urinate often
    • urination during the night
    • weak reflexes
    • a feeling of pins and needles on skin
    • inflammation of the lining of a joint
    • generalized weakness
    • intense abdominal pain
    • orgasm problems
    • abnormal dreams
    • brief episodes of memory loss called transient global amnesia
    • accumulation of fluid or edema in the male genitals
    • anxious feelings
    • peripheral sensory nerve disorder

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    Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

    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.