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SCORE
Silica (orthosilicic acid)
Bone · Hair · Nails
Tier 3 — Trending
What it is
Silicon is involved in collagen synthesis and bone mineralization, playing a supporting role in connective tissue health. A few trials show modest improvements in hair thickness and nail brittleness. The liquid orthosilicic acid form is better absorbed than solid silica supplements. Generally safe. Evidence is modest but growing for hair and nail benefits.
Efficacy
2/5
Safety
4/5
Research
2/5
Onset
1/5
Cost
3/5
Drug-int.
5/5
Dose
5–10 mg/day orthosilicic acid (liquid form); solid silica is poorly absorbed
Time of day & tips
Take liquid orthosilicic acid diluted in water, with or without food. Morning is convenient. Avoid solid silica supplement forms — they are poorly absorbed.
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