EDTA

EDTA is a chemical found in Creatures 2, Creatures 3, and Docking Station. In all of these games, it is the cure for heavy metal poisoning.

In Creatures 2, a natural source of EDTA are the Cantharis Berry and Gelsemium.

In Creatures 3, a natural source of EDTA can be found in the Medicine maker's Heavy Metal Cure potion.

In Docking Station, the Tuba is a natural source of EDTA.