I'd stay away from the Viagra though. For conditions persisting longer than 4 hours, you'll have to paddle kneeling or use a SUP.
One of my soldiers told me this and I have since added it in my morning routine. I do find that the less active in a day I am (skip a run or a surf) the more the next day its tight, especially after sitting down.
I hear that a lot of athletes end up suffering from IT issues due to not knowing how to stretch it (or in my case) thinking the IT band is a part of Geek Squad.