If you experience dizziness, chest pain or nausea upon beginning sexual activity after taking this drug, stop immediately, and consult your doctor as soon as possible. If you begin to experience blurred vision, discontinue this medication, and consult your doctor immediately. Minor side effects like diarrhea, indigestion, headache, nasal stuffiness and flushing may be seen. These may be mild, and may not require medical attention, but must be reported to your doctor if they continue or worsen. However, if you suffer from serious side effects like
- Skin allergies
- Skin rashes
- Facial swelling
- Swelling of the lips and tongue
- Hives
- Itching
- Respiratory problems
- Changes in vision
- Chest pain
- Seizures
- contact your doctor immediately. If you have prolonged erections or painful erections, refer a doctor immediately. This can be the sign of a serious complication.
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