The most common Unintended effects of VIAGRA: headache; flushing; upset tummy; abnormal eyesight, like alterations in coloration eyesight (such as using a blue coloration tinge) and blurred vision; stuffy or runny nose; back again discomfort; muscle agony; nausea; dizziness; rash.Grapefruit juice: Grapefruit juice may possibly interfere Using the a… Read More