Kieselguhr

Kieselguhr, also known as diatomaceous earth or silica, is found in various forms including red algae (Lithothamnium calcareum), horsetail (Equisetum arvense), and bamboo. Silica is essential for plants as it plays a crucial role in the formation of cell walls.

In dietary supplements, it is available in dry form, as well as dissolved in a gel or liquid.