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Table 1 Mineral composition of Sierrasil and the expected intake at the low (2 g/day) and high (3 g/day) doses. Mineral bioavailability in the various forms has not been established but data on acid liberalization suggest that for some minerals the dose available for absorption may be as low as < 0.1%.

From: Early relief of osteoarthritis symptoms with a natural mineral supplement and a herbomineral combination: A randomized controlled trial [ISRCTN38432711]

Metal assays (ICP-MS)

Total Intake at 2 g/day dose

Total Intake at 3 g/day dose

Aluminum

188 mg/day

282 mg/day

Antimony

< 0.006 mg/day

< 0.009 mg/day

Arsenic

0.026 mg/day

0.035 mg/day

Barium

2.0 mg/day

2.9 mg/day

Beryllium

< 0.002 mg/day

< 0.003 mg/day

Bismuth

< 0.06 mg/day

< 0.09 mg/day

Cadmium

0.0036 mg/day

0.0054 mg/day

Calcium

26 mg/day

40 mg/day

Carbon

0.60 mg/day

0.90 mg/day

Chromium

0.040 mg/day

0.060 mg/day

Chromium (VI)

< 0.00048 mg/day

< 0.00072 mg/day

Cobalt

0.017 mg/day

0.026 mg/day

Copper

0.074 mg/day

0.11 mg/day

Iron

119 mg/day

178 mg/day

Lead

0.013 mg/day

0.020 mg/day

Lithium

0.02 mg/day

0.03 mg/day

Magnesium

11 mg/day

17 mg/day

Manganese

0.29 mg/day

0.44 mg/day

Mercury

0.0012 mg/day

0.0017 mg/day

Molybdenum

0.002 mg/day

0.003 mg/day

Nickel

0.027 mg/day

0.040 mg/day

Phosphorous

3.8 mg/day

5.7 mg/day

Potassium

20 mg/day

30 mg/day

Selenium

0.0030 mg/day

0.0045 mg/day

Silica

899 mg/day

1349 mg/day

Silver

0.015 mg/day

0.022 mg/day

Sodium

< 12 mg/day

< 18 mg/day

Strontium

2.1 mg/day

3.2 mg/day

Sulphur

30 mg/day

45 mg/day

Thorium

< 0.010 mg/day

< 0.015 mg/day

Tin

< 0.02 mg/day

< 0.03 mg/day

Titanium

10 mg/day

15 mg/day

Uranium

< 0.12 mg/day

< 0.18 mg/day

Vanadium

0.34 mg/day

0.51 mg/day

Zinc

0.082 mg/day

0.12 mg/day

Zirconium

0.23 mg/day

0.35 mg/day