Trientine is a medication primarily used to treat Wilson's disease, a genetic disorder that leads to excessive copper accumulation in the body. It works by binding to copper, allowing it to be excreted through urine, thus reducing copper levels in the body. Trientine is often prescribed for patients who cannot tolerate another medication called penicillamine. It is usually taken orally and may be combined with other treatments to manage copper levels effectively. Regular monitoring of copper levels and liver function is essential during treatment to ensure safety and effectiveness.