If taken for a long time, it can cause acid-base imbalance in the body, more seriously, it can lead to metabolic alkalosis, and excessive sodium load can cause edema.

Extended data:

metabolic acidosis

Mild people can be asymptomatic. Severe patients may experience fatigue, dizziness, lethargy, insensitivity or irritability, and even unconsciousness or coma. The most prominent performance is deep and fast breathing, and the exhaled gas has a ketone smell. The patient's face flushed, his heart rate increased and his blood pressure was low. Symmetrical muscle tension may be weakened and leg reflexes may be weakened or disappeared. Patients are prone to arrhythmia, acute renal insufficiency and shock.

metabolic alkalosis

Mild people often have no obvious manifestations, and sometimes they may have shallow breathing, slow breathing or mental abnormalities, such as delirium, insanity or drowsiness. There may be hypokalemia and water shortage. In severe cases, coma may occur.

Reference: People's Daily Online-What are the hazards of eating baking soda tablets for a long time?