The agency wants manufacturers to remove them from the market, contending they harm the gut microbiome, could cause thyroid dysfunction and lower IQ. Two states have banned the mineral in drinking water.

The U.S. Food and Drug Administration said on Tuesday it is starting a process to remove fluoride supplements for children from the market, the latest federal action against the tooth-strengthening mineral.

The US Food and Drug Administration says it is starting the process to remove prescription fluoride tablets and drops from the market.