Possible Side Effects of Viagra
Do not take with grapefruit juice, as this may cause an undesirable build up in the body and increase the risk of side effects.
Common Side Effects: Altered vision (blue tint or haze), congested sinuses, or dry eyes. These events may occur in as many as 3% of patients.
Mild Adverse Side Effects: Flushing, headache, indigestion, light sensitivity, rash, unable to tell between blue and green. While these infrequent reactions may not pose an immediate danger, contact your physician as soon as possible, and avoid this medication until you have received further instructions.
Serious Adverse Side Effects: Arrhythmia, blood sugar problems (in patients with history of diabetes), decreased blood flow to the heart, heart attack, priapism (prolonged and painful erection), seizures, swelling or redness of the eyes, or temporary blindness. These extremely rare side effects indicate the need for emergency medical attention. Call emergency services immediately.
Tell your doctor if you have or have ever had a bleeding disorder; heart, kidney, or liver disease; a heart attack; irregular heartbeats; angina; a stroke; high or low blood pressure; sickle cell anemia; multiple myeloma; leukemia; conditions affecting the shape of the penis.
