Esc Laboratoire Lithothamne Supplement Remineralisation Gastric Acidity 1kgLithothamne is a calcareous algae with the unique ability to absorb minerals found in seawater. A source of easily absorbed calcium and magnesium Useful when the diet is lacking in essential minerals Recommended for horses showing signs of demineralisation Recommended in cases of gastric acidity This supplement may sometimes come in powder form and sometimes as small pellets.