The most typical Unwanted side effects of VIAGRA: headache; flushing; upset abdomen; abnormal eyesight, including adjustments in color vision (such as using a blue colour tinge) and blurred eyesight; stuffy or runny nose; back ache; muscle ache; nausea; dizziness; rash.Cialis® and generic Cialis ® can result in severe Unintended effects. Rarely r… Read More