Sodium metabisulfite

Ingredient Type: Preservative
Additive Number: 223

Sodium metabisulfite is a common food preservative that is often used in protein powders to prevent oxidation and extend shelf life. It is a white, crystalline powder that can be added directly to the protein powder mix.

While sodium metabisulfite is generally recognized as safe by the US Food and Drug Administration (FDA), it can cause allergic reactions in some individuals. Common symptoms of an allergic reaction to sodium metabisulfite may include hives, difficulty breathing, and stomach upset.

Individuals with asthma may be particularly sensitive to sodium metabisulfite, as it can trigger asthma attacks. In addition, some individuals may experience headaches, dizziness, or other symptoms after consuming products that contain sodium metabisulfite.

While sodium metabisulfite is generally considered safe in small amounts, individuals with a known allergy or sensitivity to sulfites should avoid products that contain this ingredient.

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