Not sure if this has been covered but anyways ............. I have seen advertised in the News of the World where you can buy these blue triangular pills (so many for a couple of quid) I take it from the advertiseing that these are substitues for `Viagra`. Well I also take it that these pills do something to the blood in some way (making the old chap come to life) and perking up the labido somewhat. (Getting to the question now) My question is can these be taken whilst I am already taking blood pressure medication? Comments / answers ?