Sildenafil (Systemic)
Brand Names : Viagra
Side Effects of This MedicineAlong with its needed effects, a medicine may
cause some unwanted effects. Although not all of these side effects may occur,
if they do occur they may need medical attention.
Less common
Abnormal vision, including blurred vision, seeing shades of colors
differently than before, or sensitivity to light; bladder pain; cloudy or bloody urine; dizziness; increased frequency of urination; pain on urination
Rare
Bleeding of the eye; convulsions (seizures); decreased vision or other changes in vision; double vision; prolonged, painful, or
inappropriate erection of penis; redness, burning,
or swelling of the eye; vision loss, temporary
Note: The following rare side effects have not been completely established
as being caused by sildenafil
Blood sugar problems (more likely with patients with diabetes
mellitus), such as anxiety, behavior change similar to drunkenness, blurred
vision, cold sweats, confusion, cool and pale skin, difficulty in concentrating,
drowsiness, excessive hunger, fast heartbeat, headache, nausea, nervousness,
nightmares, restless sleep, shakiness, slurred speech, and unusual tiredness
or weakness; bone pain; breast enlargement; chest pain; chills; confusion; convulsions
(seizures); deafness; decrease
in amount of urine or in frequency of urination; dizziness or lightheadedness, especially when getting up from a lying or sitting
position; dry eyes; dry
mouth; dryness, redness, scaling, or peeling of the
skin; eye pain; fainting
or faintness; fast, irregular, or pounding heartbeat; feeling of something in the eye; groups of skin lesions with swelling; headache (severe
or continuing); heart failure; hives; increase in size of pupil; increased sweating; increased thirst; itching of skin; low blood pressure; lower back or side pain; migraine headache; nausea (severe or continuing); nervousness; numbness
of hands; painful, swollen joints; redness, itching, or tearing of eyes; shortness of
breath or troubled breathing; skin paleness; skin rash; skin ulcers; sore throat and fever or chills; sudden
weakness; swelling of face, hands, feet, or lower
legs; twitching of muscles; unusual tiredness or weakness; unusual feeling of
burning or stinging of skin
Other side
effects may occur that usually do not need medical attention. These side effects
may go away during treatment as your body adjusts to the medicine. However,
check with your doctor if any of the following side effects continue or are
bothersome:
Other side effects not listed above may also occur in
some patients. If you notice any other effects, check with your doctor.
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