The commonest Unwanted effects of VIAGRA: headache; flushing; upset tummy; irregular eyesight, including modifications in colour eyesight (which include possessing a blue color tinge) and blurred eyesight; stuffy or runny nose; back suffering; muscle discomfort; nausea; dizziness; rash.When recommending a phosphodiesterase-5 inhibitor, it is essent… Read More