The commonest Uncomfortable side effects of VIAGRA are headache; flushing; upset stomach; irregular eyesight, for instance variations in color eyesight (for example getting a blue shade tinge) and blurred eyesight; stuffy or runny nose; back again pain; muscle mass pain; nausea; dizziness; rash.Bu durumlar acil t?bbi müdahale gerektiren sa?l?k sor