just to clarify for the casual reader, the GP comment talked about adding salt (NaCl sodium chloride) to drinking water, and the parent comment is talking about "not for hypernatremia"
But from the root words, hypernatremia appears to be too much natrium/sodium. Presumably hyperkalemia is too much K potassium? the low sodium salt substitutes you see at the grocery are generally potassium salts.
only pointing this out because the two comments boil down to "you should add sodium to your diet" and "no, not if you have too much sodium" which somehow seems a little simpler
But from the root words, hypernatremia appears to be too much natrium/sodium. Presumably hyperkalemia is too much K potassium? the low sodium salt substitutes you see at the grocery are generally potassium salts.
only pointing this out because the two comments boil down to "you should add sodium to your diet" and "no, not if you have too much sodium" which somehow seems a little simpler