Common
- flushing
- headache
- nasal congestion
- stomach discomfort following meals
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
- diarrhea
Rare
- bleeding of the eye
- convulsions (seizures)
- decreased or double vision or in extreme cases blindness
- a blue tint to your vision
- prolonged, painful, or inappropriate erection of penis
- redness, burning, or swelling of the eye
- anxiety
When used properly and appropriately, Viagra is helpful for men with erectile dysfunction. By taking the medicine as prescribed and by knowing what adverse effects to look for, Viagra can be safe and effective. Before taking Viagra, you must consult your physician to see if it is right for you.
