Does Viagra (Sildenafil) have side effects?
When taken at the recommended dose, the possible side effects of Viagra (Sildenafil) are usually mild to moderate and last a short time. The most common side effects are a headache and facial flushing. Less common effects include indigestion, dizziness, stuffy nose and visual effects (a blue coloured tinge to vision and increased brightness of light or blurred vision).
