Mineral
Silica
Silica is silicon dioxide, a compound of silicon and oxygen found in sand, quartz and plants such as horsetail. Supplements use it as a source of silicon.
Are all silicon compounds equivalent?
BfR distinguishes silicon compounds rather than treating them as interchangeable. Its limits refer to elemental silicon, not total product weight. 1
Sources
- Höchstmengenvorschläge für Silizium in Lebensmitteln inklusive Nahrungsergänzungsmitteln Bundesinstitut für Risikobewertung, 2021