Please help.

[aswresm]

Any idea how do we calculate elemental iron?...Also for elemental calcium??

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[sweetnspice1221]

Any idea how do we calculate elemental iron?...Also for elemental calcium??

I think for ferrous sulfate it's 20% elemental and ferrous fumarate is 30% elemental.
Example) If you have a 325 mg ferrous sulfate tablet --> 325(0.20)= 65 mg of elemental iron.

For calcium carbonate i think its 40% and calcium citrate is 21% elemental.....