OTTAWA - Health Canada says Procter & Gamble is voluntarily recalling two different brands of Oral B mouthwash due to possible contamination.

The products being recalled are: Oral B Anti-Cavity Dental Rinse -- Alcohol Free (NPN 02129930) and Oral-B Anti-Bacterial with Fluoride  (DIN 02130823) -- Alcohol Free Daily Use Mouthrinse.

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Health Canada says the mouthwashes are being recalled due to possible microbial contamination.

According to Procter & Gamble, the microbial level, if present, poses virtually no risk to healthy people.

However, people with severely weakened immune systems -- such as those with cystic fibrosis -- may be at greater risk of adverse health effects.

Procter & Gamble is requesting that retailers immediately stop selling the affected products.