The most common side effects of VIAGRA: headache; flushing; upset abdomen; abnormal vision, which include variations in color vision (for instance aquiring a blue shade tinge) and blurred vision; stuffy or runny nose; back ache; muscle discomfort; nausea; dizziness; rash. The commonest Uncomfortable side effects of VIAGRA: headache; flushing; https://billx752lry7.izrablog.com/profile