Silica RDI

Silica has a recommended daily intake which is different for the various age groups and genders.

Find your recommended daily intake of silica below:

  • Infants (0-12 months) - not established*
  • Children (1-18 years) - not established*
  • Adults (19-50 years) - between 9mg - 14mg
  • Pregnant women (all ages) - not established*
  • Lactating women (all ages) - not established*
There is an established recommended daily intake (RDI) and tolerable upper limit for non-pregnant and non-lactating adults only

Tolerable Upper Limit

There is also a tolerable upper limit for vanadium - this is the maximum that can be safely taken of this mineral before it produces serious and toxic side effects:

  • Infants (0- 12 months) - not established*
  • Children (1-3 years) - not established*
  • Children (4-8 years) - not established*
  • Children (9-18 years) - not established*
  • Adults (>19 years) - 20mg-30mg
  • Pregnant women (all ages) - not established*
  • Lactating women (all ages) - not established*

* There is no known or established recommended daily intake or upper limit of silica for infants or children (between the ages of 0-12 months and between the ages of 1-18 years). Infants should be able to obtain adequate levels of silica from either their mother's breast milk or from baby formula and children under 18 should be able to obtain adequate levels of silica from their food. There is also no known or established recommended daily intake or upper limit of silica for pregnant or lactating women, whose only source of vanadium intake should be from their food.

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