Johnson & Johnson announced late Monday on the Food and Drug Administration website that they would be expanding a voluntary recall of Tylenol Arthritis Caplets because of consumer reports of a moldy smell that can cause nausea and sickness.

J&J recalled five lots of the product last month after consumers complained of a musty, mildew-like odor that triggered nausea, stomach pain, vomiting and diarrhea.

The health care company said the odor results from trace amounts of a chemical called 2,4,6-tribromoanisole. That chemical is believed to result from the breakdown of another chemical used to treat wooden pallets that transport and store packaging materials.

(via Washington Post)