Silicon Dioxide

Safe Flow AgentNatural

Silicon Dioxide is a naturally derived flow agent used in dietary supplements. Safety rating: Safe. It is widely considered safe at typical supplement doses. Found in 20 supplements in the GoodSupp database. A naturally occurring mineral used as an anti-caking agent.

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

Safety Verdict: Safe

This ingredient is rated safe for use in dietary supplements.

What is Silicon Dioxide?

A naturally occurring mineral used as an anti-caking agent.

Common Names Silicon Dioxide, silica,SiO2
Type Flow Agent
Origin Natural / Plant-derived
Safety Rating Safe

Why is Silicon Dioxide used in supplements?

Prevents clumping and ensures consistent dosing.

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

Should you be concerned about Silicon Dioxide?

No. Silicon Dioxide is widely regarded as safe for use in dietary supplements at typical levels. It has a long history of use and is accepted by major regulatory bodies.

No action needed. This ingredient is safe at amounts used in supplements.

Top-rated products containing Silicon Dioxide

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

Doctor's Best High Absorption Magnesium Lysinate Glycinate, Chelated, Albion® TRAACS®, 120 Tablets, (100 mg Per tablet)
Doctor's Best High Absorption Magnesium Lysinate Glycinate, Chelated, Albion® TRAACS®, 120 Tablets, (100 mg Per tablet)
Product 100 Brand N/A
Doctor's Best High Absorption Magnesium Lysinate Glycinate, Chelated, Albion® TRAACS®, 240 Tablets (100 mg Per tablet)
Doctor's Best High Absorption Magnesium Lysinate Glycinate, Chelated, Albion® TRAACS®, 240 Tablets (100 mg Per tablet)
Product 100 Brand N/A
Doctor's Best High Absorption Curcumin, 120 Veggie Caps
Doctor's Best High Absorption Curcumin, 120 Veggie Caps
Product 100 Brand N/A
NOW Foods Chewable Vitamin D-3, Fruit, 25 mcg (1000 IU), 180 Chewables
NOW Foods Chewable Vitamin D-3, Fruit, 25 mcg (1000 IU), 180 Chewables
Product 100 Brand N/A
Thorne Creatine, 30 Stick Packs, 0.18 oz (5.15 g) Each
Thorne Creatine, 30 Stick Packs, 0.18 oz (5.15 g) Each
Product 100 Brand N/A
Thorne Zinc Picolinate, 15 mg, 60 Capsules
Thorne Zinc Picolinate, 15 mg, 60 Capsules
Product 100 Brand N/A
Thorne Iron Bisglycinate, 60 Capsules (25 mg per Capsule)
Thorne Iron Bisglycinate, 60 Capsules (25 mg per Capsule)
Product 100 Brand N/A
Doctor's Best High Absorption Iron, 27 mg, 120 Tablets
Doctor's Best High Absorption Iron, 27 mg, 120 Tablets
Product 100 Brand N/A
Youtheory Men®, Shilajit, 60 Veg Caps (250 mg per Capsule)
Youtheory Men®, Shilajit, 60 Veg Caps (250 mg per Capsule)
Product 100 Brand N/A
Protocol For Life Balance KSM-66 Ashwagandha® Root Extract, 600 mg, 90 Veg Capsules
Protocol For Life Balance KSM-66 Ashwagandha® Root Extract, 600 mg, 90 Veg Capsules
Product 100 Brand N/A
ALLMAX Essentials, Ashwagandha KSM-66®, 60 Capsules (300 mg per Capsule)
ALLMAX Essentials, Ashwagandha KSM-66®, 60 Capsules (300 mg per Capsule)
Product 100 Brand N/A
NOW Foods Taurine, 500 mg, 100 Veg Capsules
NOW Foods Taurine, 500 mg, 100 Veg Capsules
Product 100 Brand N/A
NOW Foods L-Lysine, 1,000 mg, 100 Tablets
NOW Foods L-Lysine, 1,000 mg, 100 Tablets
Product 100 Brand N/A
NOW Foods L-Lysine, 1,000 mg, 250 Tablets
NOW Foods L-Lysine, 1,000 mg, 250 Tablets
Product 100 Brand N/A
Thorne Curcumin Phytosome, 60 Capsules (500 mg per Capsule)
Thorne Curcumin Phytosome, 60 Capsules (500 mg per Capsule)
Product 100 Brand N/A
Thorne Curcumin Phytosome, 120 Capsules (500 mg per Capsule)
Thorne Curcumin Phytosome, 120 Capsules (500 mg per Capsule)
Product 100 Brand N/A
Doctor's Best High Absorption Curcumin, 120 Tablets
Doctor's Best High Absorption Curcumin, 120 Tablets
Product 100 Brand N/A
Thorne Zinc Picolinate, 30 mg, 180 Capsules
Thorne Zinc Picolinate, 30 mg, 180 Capsules
Product 100 Brand N/A
Thorne Zinc Picolinate, 30 mg, 60 Capsules
Thorne Zinc Picolinate, 30 mg, 60 Capsules
Product 100 Brand N/A
Thorne Vitamin B12 as Methylcobalamin, 60 Capsules (1 mg per Capsule)
Thorne Vitamin B12 as Methylcobalamin, 60 Capsules (1 mg per Capsule)
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 safe in supplements?

Yes. Silicon Dioxide is rated safe for use in dietary supplements at typical levels. This rating is based on regulatory assessments, published safety research, and its long history of use in the supplement industry. It is widely accepted by major regulatory bodies including the FDA and EFSA. In GoodSupp's database, 20 products contain this ingredient. Consult your healthcare provider if you have specific concerns.

What is Silicon Dioxide and why is it in my supplement?

A naturally occurring mineral used as an anti-caking agent. 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 natural or synthetic?

Silicon Dioxide 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. 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.