It is the generic name of an antiseptic and disinfectant for hospital use. Chemically it's the 2, 4, 4'-trichloro-2'-hydroxydiphenyl ether. It is found in toothpastes and mouthwashes and their ingestion, causes health problems.
Triclosan is a powerful bactericidal agent that was used in the production of care and personal grooming products such as soaps, toothpaste, deodorants, etc.