I'm actually asking about my grandmother. 90, only has diabetes and high blood pressure. constant drop in sodium, 117. 3 salt tabs a day, still drops?

Hyponatremia: Or low sodium is always of concern and should always be investigated (specifically when that low). A thorough review of her meds, symptoms as well as a physical exam are recommended. Further work up should include blood/ urine tests and imaging as deemed appropriate. Have your grandma see her doc as soon as possible.

Hyponatremia. : This significant, persistent hyponatremia should be investigated. There are some BP medications that can cause hyponatremia. But this should be addressed.