Consumers were advised on Friday to discard all toothpaste made in China after federal health officials said they found Chinese-made toothpaste containing a poison related to a chemical used in antifreeze in three locations — Miami, the Port of Los Angeles and Puerto Rico.

Although there are no reports of anyone being harmed by the toothpaste, the Food and Drug Administration warned that the Chinese products have a “low but meaningful risk of toxicity and injury” to children and people with kidney or liver disease.

The United States is the seventh country to find tainted Chinese toothpaste within its borders in recent weeks.

F.D.A. officials said they found toothpaste containing a small amount of diethylene glycol, a sweet syrupy poison, at a Dollar Plus retail store in Miami, sold under the brand name ShiR Fresh Mint Flouride Paste. The F.D.A. also identified another nine brands of Chinese toothpaste that contain diethylene glycol, some with concentrations of between 3 percent and 4 percent.