Silicon Dioxide
This is what the ingredient is.
Silicon dioxide (silica) is a naturally occurring mineral. Food-grade form is synthetic amorphous silica.
Here is why it shows up on the label.
Anti-caking agent in powdered foods, coffee creamers, and spice mixes. Prevents clumping by absorbing moisture.
Here is what food agencies say.
FDA GRAS with limit of 2% by weight. European food agencies allow it (E551) with ADI not specified. It is approved in the US, Europe, and Canada.
Here is what research has found.
Not absorbed in significant amounts from GI tract. Safety reviewed by EFSA. Amorphous form (used in food) different from crystalline silica (occupational hazard).
Here are a few things worth knowing.
Food-grade amorphous silica generally recognized as safe. Not absorbed - passes through GI tract. Crystalline silica (not used in food) is a respiratory hazard. Nanoparticle forms under investigation for potential gut effects. Generally safe at approved levels.
Sources
- FDA 21 CFR 172.480
- EFSA Opinion 2018
- Food Additives & Contaminants 2015
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.