[PapaBear3625]

Baking soda is NaHCO₃, sodium(Na) plus bicarbonate.

Stomach acid contains hydrochloric acid (HCl)

Baking soda reacts to stomach acid with the sodium combining with the chlorine in the acid to produce sodium chloride -- table salt.

[bert]

For the record...... Sodium bicarbonate is produced by the stomach to counteract excess acid. It is therefore “natural”