I know you say in a later post you don't do fruits right now, but please consider cracking open a young coconut & drinking its juice. It felt so good when I was low in something...I suspect potassium, among other things. This is probably a stupid time of year to bring this up, but hey, they come from the tropics anyway. I can get a case of them from the international supermarket. I would try to get the freshest if they are available to you...the ones sitting in normal supermarkets are probably kind of old.
I just tried that O.N.E. coconut juice in a box, and it was AWFUL. Don't drink that. My husband thinks it gave him headaches, too.