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Reference guide
Bioavailable organic silicon

What organic silicon is, properties and what it is for.

A pillar guide to understanding organic silicon from start to finish: what it is, where it comes from, what sets it apart, where it acts in the body, and how to take it. The original formula by Dr. Loïc Le Ribault, authorized by the EFSA as a Novel Food. No marketing. Just evidence.

Symbol · Z
If · 14
In the body
~7 g
Endorsement
EFSA Novel
Evidence
50+ years
Cristales de silicio natural · mineral esencial presente en la naturaleza
FIG. 01 · Natural silicon
Second most abundant element in the Earth's crust
— Endorsements and certifications
EFSA
Novel Food 2016
EU
Reg. 2017/2470
OECD
471 · 473 · 474
GLP
NOAEL · safety
FSSC 22000
GMP production

01 · What is organic silicon

An essential trace element that the body recognizes.

The third most abundant trace element in the body. It stabilizes keratin filaments through silanol-protein interaction and takes part in the synthesis and cross-linking of collagen and elastin. The key factor is the chemical form: only the organic form is absorbed.

Abundance
3.rd trace element

most abundant in the body

Function
Structural

in collagen, elastin and keratin

Endorsement
EFSA

Novel Food · Reg. EU 2017/2470

Second most abundant element in the Earth's crust and third most abundant mineral in the body, after calcium and magnesium. It is present in bones, cartilage, dermis, hair, nails, blood vessel walls, and the extracellular matrix.

The form the body absorbs is called bioavailable organic silicon. Unlike inorganic silicon (silicates, colloidal silicon, or unhydrolyzed horsetail or bamboo silicon · low bioavailability), organic silicon is bound to molecules that the body recognizes. Silicium G7® uses the original formula by Dr. Loïc Le Ribault (1995), authorized by the EFSA as a Novel Food (EU Reg. 2017/2470).

It is a structural cofactor in connective tissues: necessary for the proper formation and cross-linking of type I and II collagen, elastin, keratin, and hyaluronic acid. Without adequate levels, these structural proteins form less efficiently.

The body's organic silicon concentration gradually declines with age. By around age 30, the physiological decline begins; by around age 60, reserves have fallen by half from baseline. That drop matches the loss of skin firmness, reduced bone density, and joint wear the body experiences from the fourth decade onward.

The explanation is biochemical: the enzymes that assemble collagen and elastin need silicon as a cofactor. With less bioavailable silicon, there is less efficiency in structural protein synthesis. Replenishing organic silicon consistently from age 30-40 helps maintain the levels the body needs to regenerate connective tissue at the proper speed. It is not an anti-aging: it is giving the body the material it lacks.

02 · Timeline

From Carlisle to today, more than 50 years of evidence.

From the discovery of the biological essentiality of silicon in 1957 to the Silicium G7® formula recognized by the EFSA.

1972
Edith Carlisle

Shows that silicon is an essential element for growth (Carlisle, Science 1972).

1973
Klaus Schwarz

Confirms essentiality in mammals. It is classified as a nutrient.

1995
Le Ribault

Patents the original bioavailable organic silicon formula.

2016
EFSA Novel Food

EFSA approval of Silicium G7® as a Novel Food (EU Reg. 2017/2470).

2026
Today

23 years of continuous use · 60+ studies · 5,247 reviews.

03 · Properties and functions

Six properties of organic silicon.

Biological functions of bioavailable organic silicon backed by published research.

— Fig. 02 · Structural activator

Silicon in the extracellular matrix

5 nodes · 4 proteins
Diagrama de la matriz extracelular: triple hélice de colágeno con elastina, ácido hialurónico, queratina y nodos de silicio orgánico
Collagen I · II

Structural triple helix

Elastin

Elastic recovery

Hyaluronic acid

Hydration · water retention

Keratin

Hair · nails · skin

Si Silicon

Activating cofactor

Organic silicon acts as an activating node for the four structural proteins

01

Collagen synthesis

Activates the enzymes that assemble type I collagen fibers (skin, bone) and type II collagen fibers (cartilage).

Del Bas 2014 · Reffitt 1999
02

Bone mineralization

Promotes calcium fixation in the bone matrix. Critical in growth, menopause, and osteoporosis prevention.

Jugdaohsingh 2004 · Carlisle 1981
03

Elasticity of connective tissue

Stabilizes elastin fibers and proteoglycans in the dermis, blood vessel walls, and joints.

Jugdaohsingh 2013
04

Keratin synthesis

Strengthens the disulfide bridges of hair and nail keratin. Thickness, resistance, hardness.

Wickett 2007
05

Dermal hydration

Stimulates the production of hyaluronic acid, which retains water in the extracellular matrix.

Polonini 2019
06

Removal of aluminum

Forms water-soluble complexes with systemic aluminum, helping its urinary excretion.

Bellia 1996 · Jones 2017

04 · Comparison

Organic silicon vs inorganic.

Not all silicons are the same. The chemical form determines whether the body absorbs it or eliminates it.

Inorganic

Silicates

Colloidal silicon · horsetail or bamboo silicon that is not hydrolyzed

Bioavailability
~5 % absorbed
Structural function
No structural action on collagen
EFSA endorsement
No Novel Food authorization
vs
Recommended
Organic

Silicium G7®

Original Le Ribault formula, 1995

Bioavailability
Bioavailable proven
Structural function
Stabilizes collagen, elastin and keratin
EFSA endorsement
Novel Food · Reg. EU 2017/2470

Complete silicon comparison →

05 · Where it acts in the body

Silicon is throughout the body.

These are the six places where it acts most — and what it does in each one.

Arteries and blood vessels

Concentration Very high

Keeps arteries flexible and elastic, so blood can flow easily.

Joint cartilage

Concentration Very high

Cushions the bones in every movement of knees, hips and elbows.

Nails

Concentration High

Makes them strong, ridged-free and less brittle. A key component of nail keratin.

Hair

Concentration Medium

Adds thickness, shine and strength. Strengthens the bonds that hold the hair fiber together.

Bones

Concentration Low · key

Although there is little, it is essential for calcium fixation in the skeleton.

Skin

Concentration Low · key

Supports the collagen and elastin that keep skin firm and elastic.

The bar shows how much silicon is in each tissue relative to the body total. Even at low concentrations (skin, bone), its structural function is essential: without it, proteins do not form properly.

— Relative concentrations in dry tissue · Carlisle 1981 · Schwarz 1973

06 · How to take it

Formats, doses and ways to use.

Oral use (liquid or capsule) or topical application. Each format has its specific use.

Silicium G7® Original · silicio orgánico bioasimilable líquido
Oral · Liquid
G7 Original / Siliplant · maximum bioavailability
Daily dose
Oral · Capsule
G7 Activ+ / Beauty / Articomplex
Daily dose
Topical
G7 Gel · Sport Recovery
Topical application
Consistency

Action by accumulation, not a single dose. Visible results from 8–12 weeks of consistent use.

Complete guide on how to take it →

07 · Frequently asked questions

What people ask us most.

Six common questions about organic silicon with clinical answers and sources.

01What is organic silicon?+

Organic silicon is an essential trace element bound to organic molecules that make it bioavailable. Structural cofactor in connective tissues: it takes part in the formation and cross-linking of collagen, elastin, keratin, and hyaluronic acid, present in bones, cartilage, joints, skin, hair, and nails.

02What is the difference between organic and inorganic silicon?+

Inorganic silicon (silicates, colloidal silicon, unhydrolyzed plant silicon) has limited bioavailability — it is barely absorbed. Organic silicon is stabilized in a form the body recognizes. Silicium G7® uses the original formula by Dr. Loïc Le Ribault, now improved, authorized by the EFSA as a Novel Food.

03Where is silicon found in the body?+

In all connective tissue: bones, cartilage, dermis, hair, nails, blood vessel walls, and the extracellular matrix. The third most abundant trace element. Levels decrease from age 30-40 onward.

04How is organic silicon absorbed?+

Oral use on an empty stomach or between meals. The liquid form is better assimilated than capsules. Topical use penetrates directly into the local tissue.

05How and when should organic silicon be taken?+

Dose: 10–15 ml of Silicium G7® Original per day on an empty stomach or 30 min before eating. Minimum consistency 8–12 weeks. Maintenance 5–10 ml/day.

06Is organic silicon safe?+

Yes. Silicium G7® has EFSA Novel Food authorization (EU Reg. 2017/2470), OECD-471/473/474 toxicological trials, and GMP production. 23 years of continuous use without relevant incidents.

Who is behind it

The team that backs this page.

The content is signed by who writes it and who reviews it.

Author

Juan Carlos Hierro

Director · Silicium Laboratories Europe

Industrial lead for transmitting the original formula by Dr. Le Ribault since 2010.

Scientific review

Dr. Maria del Mar Sabaté Martínez

PhD Biochemistry · Universitat Rovira i Virgili

Verification of claims with the published scientific literature.

23 years of continuous use without relevant incidents · 60+ cataloged studies · EFSA Novel Food

Organic silicon that 23 years back.

Zero relevant adverse effects reported, EFSA Novel Food authorization, and 60+ cataloged studies on the active ingredient. The original formula by Dr. Le Ribault, in liquid and capsule format.

Scientific sources

The references.

See the scientific references+
  1. Carlisle EM (1972). Silicon: an essential element for the chick. Science 178(4062):619-21. DOI →
  2. Schwarz K (1973). A bound form of silicon. Proc Natl Acad Sci 70(5):1608-12.
  3. Reffitt DM et al. (1999). Silicic acid: its gastrointestinal uptake and urinary excretion. Eur J Clin Nutr 53:813-816.
  4. Jugdaohsingh R (2007). Silicon and bone health. J Nutr Health Aging 11(2):99-110.
  5. Wickett RR et al. (2007). Arch Dermatol Res 299:499-505.
  6. EFSA (2016). Novel Food MMST. EFSA Journal 14(4):4436. EFSA →
  7. Polonini HC et al. (2019). Topical MMST delivery to viable skin. Int J Cosmet Sci 41:405-409. DOI →
  8. EU Reg. 2017/2470. EU list of novel foods.
  9. Jones K, Linhart C, Hawkins C, Exley C (2017). Urinary excretion of aluminium and silicon in secondary progressive multiple sclerosis. EBioMedicine 26:60-67.
  10. Jugdaohsingh R et al. (2013). The silicon supplement MMST is safe and increases the body pool of silicon in healthy pre-menopausal women. Nutr Metab 10:37.
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