What is the recommended dosage for Silicon (Silica)?

General: 10-25 mg/day bioavailable silicon; Skin Hair Nails: 5-10 mg ch-OSA per day

What are the side effects of Silicon (Silica)?

Potential side effects include: Generally well-tolerated, Mild gastrointestinal discomfort (rare).

What is silicon (silica) and how may it support skin health?

Silicon is a trace element involved in collagen cross-linking and glycosaminoglycan formation in connective tissue. Orthosilicic acid (bioavailable silicon) supplementation has been studied for skin, hair, and nail health. Clinical trials suggest silicon may improve skin roughness and strengthen hair and nails.

What dosage of silicon has been studied for skin benefits?

Clinical trials have used 5–10 mg of bioavailable silicon per day as choline-stabilized orthosilicic acid (ch-OSA, branded as Biosil/Regensil). Studies lasted 8–20 weeks. Silicon from horsetail extract and colloidal silica has lower bioavailability. The ch-OSA form has the best clinical evidence.

What are the potential side effects of silicon supplements?

Oral silicon supplements are generally well tolerated at studied doses. Mild digestive discomfort has been reported. Long-term safety data is limited. Crystalline silica (different from dietary silicon) is a known carcinogen when inhaled, but this does not apply to oral silicon supplements.

Silicon (Silica)

mineral

Also known as: Orthosilicic Acid, Choline-Stabilized Orthosilicic Acid, ch-OSA, BioSil, Bamboo Silica

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About

Silicon is a trace mineral involved in collagen cross-linking and glycosaminoglycan synthesis. An RCT found ch-OSA (10 mg/day for 20 weeks) significantly improved skin roughness and hair brittleness. Dietary silicon intake has declined with modern food processing.

How It Works

Trace mineral involved in collagen cross-linking and glycosaminoglycan synthesis; supports connective tissue formation by activating prolyl hydroxylase; choline-stabilized orthosilicic acid (ch-OSA) is the most bioavailable supplemental form.

Evidence For Conditions

Condition	Grade	Studies	Participants
Hair, Skin & Nails Health	C	4	220	View →

Side Effects

Generally well-tolerated
Mild gastrointestinal discomfort (rare)

Drug & Supplement Interactions

No significant drug interactions documented

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Copper Selenium Zinc

Quick Facts

Dosage: General: 10-25 mg/day bioavailable silicon; Skin_Hair_Nails: 5-10 mg ch-OSA per day
Forms: liquid capsule chewable tablet
Natural Sources: Beer, Whole grains, Bananas, Green beans, Brown rice, Mineral water
Upper Limit: Not established; generally well-tolerated
Best Time: On an empty stomach or with meals

Evidence Summary

Hair, Skin & Nails Health C

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.