My grand mother is an asthmatic patient, one of the doctor prescribed pulmoclear and montek lc, after three days she got pain in abdomen, guidiness, vomiting and finally admitted her to hospital, after 2 days doctors diagnonised that she was undergoing hyponatremia symptoms (hyponatremia secondary to SIADH). She was given sodium and potassium fluids, then she got recovered. Now she is at home, looking normal but still she is under the hyponatremia treatement. She only takes bp tablet, but now she is in taking so many medicines. What may be the root cause of Hyponatremia? Does she need to take medicines for long years?