Is Potassium Metabisulfite Safe to Eat? Yes, potassium metabisulfite almost has no side effects (maybe the allergy caused by sulfur dioxide) and the safety has been approved by the authorities.

Application

Potassium metabisulfite, also known as the food additive E224 or potassium pyrosulfate, is a food preservative which preserves the natural colour of food and protect against bacteria.