Used as a chelating agent to treat heavy metal poisoning, especially lead poisoning in children. It binds to heavy metals in the bloodstream, allowing them to be excreted through urine. Commonly used in pediatric cases due to its oral availability and relatively low toxicity. Also applied in cases of mercury and arsenic poisoning. In some countries, it is part of standard treatment protocols for childhood lead toxicity. Additionally investigated for use in detoxification support in occupational exposure settings.