Is Silicon Dioxide Safe During Pregnancy?
The facts: Silicon Dioxide is not banned worldwide, but some health agencies have flagged concerns. We can't tell you whether it's safe for your pregnancy — that's a conversation for your OB-GYN or midwife. What we can do is show you the regulatory facts and flag Silicon Dioxide on any product's label so you can decide with your provider. Commonly found in: McCormick Spices, Morton Salt, Clabber Girl Baking Powder.
TL;DR: Silicon Dioxide is allowed in the EU and allowed in the US. Here's what to know if you're pregnant.
Silicon Dioxide: regulatory status at a glance
| EU status | Allowed |
|---|---|
| US status | Allowed |
| Risk level (regulatory) | low |
| Where it shows up | McCormick Spices, Morton Salt, Clabber Girl Baking Powder, Coffee-Mate Creamer, Various protein powders |
What is Silicon Dioxide?
Silicon dioxide (silica) is a naturally occurring mineral compound used as an anti-caking agent in powdered and granular foods. The food-grade form is amorphous (non-crystalline) synthetic silica, distinct from the crystalline quartz form associated with lung disease. It absorbs moisture and prevents clumping in powders.
Why is Silicon Dioxide used in food?
Prevents caking and clumping in powdered spices, salt, baking powder, and powdered beverages; also used as a carrier for flavorings.
What regulators have flagged about Silicon Dioxide
Food-grade amorphous silicon dioxide is generally recognized as safe. EFSA re-evaluated it in 2018 and concluded there was no safety concern at typical dietary exposure levels; however, the panel noted uncertainty about nanoparticle forms. The food form should not be confused with crystalline silica (quartz) dust, which is a recognized carcinogen when inhaled occupationally. Ingested amorphous silica passes through the body largely unabsorbed.
For educational use only. This page summarizes the regulatory status of Silicon Dioxide with citations to the primary sources below. It is not medical advice and is not pregnancy-specific medical guidance. Consult your OB-GYN or midwife for decisions about your pregnancy.
Pregnancy-conscious swaps free from Silicon Dioxide →
Audited products that don't contain Silicon Dioxide.
As an Amazon Associate, BannedPantry earns from qualifying purchases. This never influences our ratings — see Affiliate Disclosure.
Silicon Dioxide and pregnancy: common questions
Is Silicon Dioxide banned anywhere?
Silicon Dioxide is not currently banned worldwide, though some agencies have flagged concerns. See the sources below.
Should I avoid Silicon Dioxide during pregnancy?
That's a decision for you and your OB-GYN or midwife — we don't give medical advice. What we can tell you is the regulatory status above. Many people choose to limit additives during pregnancy out of caution; bring this page and its sources to your next appointment.
What foods contain Silicon Dioxide?
Commonly found in McCormick Spices, Morton Salt, Clabber Girl Baking Powder, Coffee-Mate Creamer, Various protein powders. Scan any product's barcode to check its label for Silicon Dioxide.
What can I use instead of Silicon Dioxide?
Calcium silicate and tricalcium phosphate are alternative anti-caking agents. Rice flour and cornstarch are used in some applications. See the pregnancy-conscious swaps below.
Scan any product's barcode and instantly see if it contains Silicon Dioxide or other ingredients restricted overseas.
Scan a product free →Other ingredients to check during pregnancy
Sources
- Re-evaluation of silicon dioxide (E 551) as a food additive — EFSA
- FDA 21 CFR 172.480 — Silicon dioxide — FDA
Our scores are never influenced by brands. Last updated 6/11/2026.