This poisoning is from an overdose of sodium carbonate.

Expectations (prognosis)

The prognosis (probable outcome) will be dependent on the corrosive potential of the product ingested, as well as how rapidly the alkali was diluted and neutralized. Extensive damage to the mouth, throat, and stomach are possible. The ultimate outcome depends on the extent of this damage. Damage may continue to occur to the esophagus and stomach for several days after the alkali was swallowed, and further complications or death may occur on a delayed basis.