WHAT DOES SEX PILLS MEAN?

are allergic to sildenafil, as contained in VIAGRA and Revatio®, or any in the components in VIAGRAThe most common Negative effects of VIAGRA: headache; flushing; upset stomach; abnormal vision, which include variations in shade eyesight (for example aquiring a blue color tinge) and blurred vision; stuffy or runny nose; back soreness; muscle mass