I took a diazepam a few hours ago and just realised I am sitting on my sofa with my feet on the floor, which I never do, it is noticeable because I have a deep sofa so it’s a bit tricky. I chose a deep sofa because I always sit on it with my feet up.
Midodrine has been shown to help post-spaceflight orthostatic hypotension. It appears that orthostatic intolerance following space flight is not explained by a single mechanism. LINK