McNeil Consumer Healthcare and the FDA have announced a voluntary recall of certain lots of over-the-counter products, including Tylenol (acetaminophen), Motrin IB (ibuprofen), St. Joseph Aspirin (aspirin), Simply Sleep (diphenhydramine), and Rolaids (calcium carbonate and magnesium hydroxide). This recall follows an investigation of consumer reports of an unusual moldy, musty, or mildew-like odor that was associated with temporary and non-serious gastrointestinal events (eg, nausea, stomach pain, vomiting, diarrhea) in a small number of cases.

McNeil Consumer Healthcare has determined that the uncharacteristic smell is caused by trace amounts of the chemical 2,4,6-tribromoanisole (TBA). This can result from the breakdown of a chemical applied to the wood of pallets that transport and store product packaging materials. The health effects of TBA have not been well studied, but no serious events have been documented.

Consumers who possess the recalled products should stop using them immediately and contact their healthcare provider with any medical questions or concerns associated with this product.

For more information and a full list of recalled products visit