Silicon Dioxide (Silica)

Generally Safe Flow AgentNatural

Silicon Dioxide (Silica) is a naturally derived flow agent used in dietary supplements. Safety rating: Generally Safe. It is generally considered safe for most people at standard doses. Found in 20 supplements in the GoodSupp database. Silicon dioxide, also known as silica, is a compound of silicon and oxygen.

20 Products use this
Generally Safe Safety rating
Flow Agent Category
Yes Natural origin

Safety Verdict: Generally Safe

This ingredient is rated generally safe for use in dietary supplements.

What is Silicon Dioxide (Silica)?

Silicon dioxide, also known as silica, is a compound of silicon and oxygen.

Common Names Silicon Dioxide (Silica), silica
Type Flow Agent
Origin Natural / Plant-derived
Safety Rating Generally Safe

Why is Silicon Dioxide (Silica) used in supplements?

It is used as a flow agent to prevent clumping and improve powder flow.

Role in supplements: Flow agent — prevents powder clumping and ensures uniform filling of capsules.

Should you be concerned about Silicon Dioxide (Silica)?

Generally no. Silicon Dioxide (Silica) is considered safe for most people at typical supplement doses. Some individuals may want to be aware of minor sensitivities.

Low risk. Generally safe for most people in supplement amounts.

Top-rated products containing Silicon Dioxide (Silica)

These 20 highest-scoring supplements in our database use Silicon Dioxide (Silica).

California Gold Nutrition L-Theanine Featuring AlphaWave 100 mg
California Gold Nutrition L-Theanine Featuring AlphaWave 100 mg
Product 100 Brand N/A
California Gold Nutrition L-Glutathione 500 mg
California Gold Nutrition L-Glutathione 500 mg
Product 100 Brand N/A
California Gold Nutrition L-Glutathione 500 mg
California Gold Nutrition L-Glutathione 500 mg
Product 100 Brand N/A
California Gold Nutrition Magnesium Bisglycinate Chelate 100 mg Veggie Capsules
California Gold Nutrition Magnesium Bisglycinate Chelate 100 mg Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Magnesium Bisglycinate Chelate 100 mg Veggie Capsules
California Gold Nutrition Magnesium Bisglycinate Chelate 100 mg Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition L-Theanine 100 mg
California Gold Nutrition L-Theanine 100 mg
Product 100 Brand N/A
California Gold Nutrition L-Theanine 200 mg
California Gold Nutrition L-Theanine 200 mg
Product 100 Brand N/A
Super Nutrition Biotin, 5,000 mcg, 120 Veggie Capsules
Super Nutrition Biotin, 5,000 mcg, 120 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Panax Ginseng Extract 250 mg Veggie Capsules
California Gold Nutrition Panax Ginseng Extract 250 mg Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Beta Glucan 1-3, 1-6, 200 mg
California Gold Nutrition Beta Glucan 1-3, 1-6, 200 mg
Product 100 Brand N/A
California Gold Nutrition S-Acetyl L-Glutathione 100 mg
California Gold Nutrition S-Acetyl L-Glutathione 100 mg
Product 100 Brand N/A
California Gold Nutrition S-Acetyl L-Glutathione 100 mg
California Gold Nutrition S-Acetyl L-Glutathione 100 mg
Product 100 Brand N/A
California Gold Nutrition Taurine, 1,000 mg, 60 Veggie Capsules
California Gold Nutrition Taurine, 1,000 mg, 60 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Saffron Extract with Affron 28 mg
California Gold Nutrition Saffron Extract with Affron 28 mg
Product 100 Brand N/A
California Gold Nutrition Acetyl-L-Carnitine 500 mg
California Gold Nutrition Acetyl-L-Carnitine 500 mg
Product 100 Brand N/A
California Gold Nutrition L-Cysteine AjiPure 500 mg
California Gold Nutrition L-Cysteine AjiPure 500 mg
Product 100 Brand N/A
California Gold Nutrition EuroHerbs™, Olive Leaf Extract 500 mg
California Gold Nutrition EuroHerbs™, Olive Leaf Extract 500 mg
Product 100 Brand N/A
California Gold Nutrition Red Yeast Rice 600 mg
California Gold Nutrition Red Yeast Rice 600 mg
Product 100 Brand N/A
California Gold Nutrition EuroHerbs Lemon Balm Extract 500 mg
California Gold Nutrition EuroHerbs Lemon Balm Extract 500 mg
Product 100 Brand N/A
California Gold Nutrition Huperzine A, 250 mcg, 90 Veggie Capsules
California Gold Nutrition Huperzine A, 250 mcg, 90 Veggie Capsules
Product 100 Brand N/A
Related Ingredients
Calcium Silicate Safe Colloidal Silicon Dioxide Generally Safe Colloidal Silicon Dioxide and Magnesium Stearate Generally Safe Hydrated Silica Generally Safe Magnesium Silicate Generally Safe Magnesium Stearate (Vegetable Source) and Silica Generally Safe Modified Cellulose Gum and Magnesium Stearate Generally Safe Organic Rice Concentrate Generally Safe
Frequently Asked Questions
Is Silicon Dioxide (Silica) safe in supplements?

Silicon Dioxide (Silica) is rated generally safe for most people at amounts commonly found in supplements. While the overall safety profile is favorable, some individuals may experience minor sensitivities. In GoodSupp's database, 20 products contain this ingredient. Consult your healthcare provider if you have specific concerns.

What is Silicon Dioxide (Silica) and why is it in my supplement?

Silicon dioxide, also known as silica, is a compound of silicon and oxygen. As a flow agent, it prevents powder ingredients from clumping and ensures uniform filling of capsules during manufacturing. It appears in 20 products in the GoodSupp database.

Is Silicon Dioxide (Silica) natural or synthetic?

Silicon Dioxide (Silica) is naturally derived, meaning it comes from natural sources such as plants, minerals, or animal products rather than being chemically synthesized. Natural-origin ingredients are preferred by many consumers, though it's important to note that 'natural' does not automatically mean 'safer' — safety depends on the specific substance, its purity, and the amount used. The safety rating assigned by GoodSupp is based on the ingredient's actual safety profile, not its origin.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.