비아그라 - 개요
The most typical Negative effects of VIAGRA: headache; flushing; upset stomach; irregular vision, for instance alterations in color eyesight (including using a blue shade tinge) and blurred vision; stuffy or runny nose; again soreness; muscle suffering; nausea; dizziness; rash.an erection that won't disappear (priapism). In case you have an erectio