I am 71 years old and have been on high blood pressure medication for a number of years. Back in the 1990's, I was using viagra, but back then it was $10 a pill. It's way too expensive now as far as I'm concerned and it sounds like maybe sildenafil is the alternative I've been looking for. I will be talking to my doctor about it, but I would like to know in advance that it is safe to take. I'm sure it is, but just maybe you can reassure me of that. Thanks much!