Nausea
An unsettled stomach is a common symptom, sometimes accompanied by vomiting, as the body reacts to the electrolyte imbalance. The gastrointestinal tract is sensitive to changes in sodium levels, which can disrupt its normal functioning and lead to feelings of nausea or the act of vomiting as the body tries to correct the imbalance. [4]
Muscle Cramps or Spasms
Sudden, involuntary muscle contractions are a telltale sign of hyponatremia. These muscle issues stem from disrupted communication between nerves and muscles due to inadequate sodium, essential for nerve function and muscle contraction. [5]