Nature39s own wholefood calcium 200mg is a natural multimineral seaweed product harvested from atlantic waters off irelands south west coast it is an organic wholefood product with no additives the seaweed which produces wholefood calcium is called lithothamnium calcareum this is a small red seaweed composed of a whole array of essential nutrients in a highly bioavailable form including high levels of calcium magnesium boron and zinc the waters from which this seaweed i