Popular US breakfast cereal Cheerios is a drug, at least if the claims made on the label by its manufacturer General Mills are anything to go by, the US Food and Drug Administration (FDA) has said.

"Based on claims made on your product's label, we have determined that your Cheerios Toasted Whole Grain Oat Cereal is promoted for conditions that cause it to be a drug," the FDA said in a letter to General Mills which was posted on the federal agency's website Tuesday.

Cheerios labels claim that eating the cereal can help lower bad cholesterol, a risk factor for coronary heart disease, by four percent in six weeks...

...the FDA warned in its letter that if General Mills fails to "correct the violations" on its labels, boxes of Cheerios could disappear from supermarket and wholesaler shelves around the United States and the company could face legal action.