A sodium level of 121 indicates low sodium, which needs careful management. Along with Natrise 15 mg, help her by avoiding excessive water intake, including moderate salt in meals, watching for weakness or confusion, and following her doctor's guidance closely.

There is no fixed duration for using Natrise 15 mg (Tolvaptan); it depends on your condition, sodium levels, and your doctor’s advice. Regular blood tests are needed to monitor safety. There is no exact substitute, and you should not take any alternative unless prescribed by your doctor, as even medicines with the same ingredient may have different inactive components that affect safety.