Triclosan is an antibacterial and antifungal agent. It is used in a range of consumer products where it is used to treat and stop the growth of bacteria, fungi, and mildew.
Triclosan safety is currently under review by the U.S. Food and Drug Administration (FDA) and Health Canada. There are currently twenty antimicrobial registrations, which the U.S. Environmental Protection Agency (EPA) regulates under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA).
Triclosan is used as a registered pesticide only in a small portion of its overall uses. It is also used in conveyor belts, fire hoses, dye bath vats, or ice-making equipment as an antimicrobial pesticide. Triclosan can be directly applied to commercial HVAC coils, where it prevents microbial growth.
Chemical widely used in antibacterial hand soaps may impair muscle function
Triclosan, an antibacterial chemical widely used in hand soaps and other personal-care products, hinders muscle contractions at a cellular level, slows swimming in fish and reduces muscular strength in mice, according to researchers at the University of California, Davis, and the University of Colorado. The findings appear online in the Proceedings of the National Academy of Sciences of the United States of America.
"Triclosan is found in virtually everyone's home and is pervasive in the environment," said Isaac Pessah, professor and chair of the Department of Molecular Biosciences in the UC Davis School of Veterinary Medicine and principal investigator of the study. "These findings provide strong evidence that the chemical is of concern to both human and environmental health."
Triclosan is commonly found in antibacterial personal-care products such as hand soaps as well as deodorants, mouthwashes, toothpaste, bedding, clothes, carpets, toys and trash bags. The U.S. Environmental Protection Agency in 1998 estimated that more than 1 million pounds of triclosan are produced annually in the United States, and that the chemical is detectable in waterways and aquatic organisms ranging from algae to fish to dolphins, as well as in human urine, blood and breast milk.
The investigators performed several experiments to evaluate the effects of triclosan on muscle activity, using doses similar to those that people and animals may be exposed to during everyday life.