Dr Mercola (yes, I know not everyone is a fan…) recommends Himalayan Pink salt as having a better mix of minerals, than even sea salt, including a better balance of potassium and sodium.
Personally I (occasionally) use potassium bicarbonate, although I am wary of going overboard with it: many people seem to advise much more caution over potassium supplementation than say, magnesium. I’m not sure of all the reasons, but it must presumably be the case that it’s easier to knock the potassium levels off kilter than the sodium levels.
One kind of rule of thumb that I’ve semi-memorised is that potassium is important inside our cells, while sodium is important outside. So I assume it’s something to do with that.
However, I assume that the amount of potassium in sea salt, Himalayan pink salt, and even Lo-Salt and the like, is not enough to worry about.
(I usually try to balance out my potassium bicarbonate with sodium bicarbonate, or else some sea salt).