Are you a Medical Professional?
And you are recommending drugs????
I'd recommend Bobby....that you be a newb for some more time.
You have to understand simple physics. When sitting, almost all of your weight is on your butt. That causes high compression of muscles and can easily cause blood clots. While sleeping, your weight is distributed over entire body. Much lower chance of blood clots.
Medical doctors have limited knowledge of physics and fluid dynamics. And most doctors I have dealt with lack common sense. MD stands for Doctor of Medicine. They are very good at prescribing pills.