POTSGIRL does an excellent job covering treatments for POTS in this 2011 post
"As of 2011, there is no one-size-fits-all treatment or "cure" for POTS. Chances are you will have to try many different things to feel better before you figure out what works best for you. And even when you figure out what works best for you, you probably won't feel 100% normal or back to your old pre-POTS self for a long time, if ever. But that doesn't mean you shouldn't try to feel as comfortable and normal as possible."
See more here
"As of 2011, there is no one-size-fits-all treatment or "cure" for POTS. Chances are you will have to try many different things to feel better before you figure out what works best for you. And even when you figure out what works best for you, you probably won't feel 100% normal or back to your old pre-POTS self for a long time, if ever. But that doesn't mean you shouldn't try to feel as comfortable and normal as possible."
See more here