Saputo Inc. is warning the public not to consume some 4-litre bags of Neilson Trutaste 2% Microfiltered Partly Skimmed Milk, because it might contain a cleaning solution.

The affected product has a best before date of February 12, 2012. The Best Before code 1590 FE12 H7 appears on the bag closure tab. No other codes are affected.

The product has been distributed in Ontario and in Aylmer, Quebec.

The milk should not be consumed, Saputo says. Milk containing this cleaning solution may not look or smell spoiled, but drinking the milk could cause symptoms such as nausea, upset stomach or vomiting, the company warns.

The Canadian Food Inspection Agency says there has been one reaction associated with using this product.

Sandy Vassiadis, the director of corporate communications at Saputo Inc., tells CTVNews.ca that the company received a call on Thursday from a woman who said she felt sick to her stomach after drinking the milk.

The woman sent in a sample of the milk she drank and lab testing detected the cleaning solution.

Saputo is investigating how the cleaning solution might have entered the milk, Vassiadis said. The company will issue a news release when it has completed its investigation.

Vassiadis added that the milk tank used in the recalled lot has been taken out of commission. The rest of the processing plant remains in operation.

Saputo says it's undertaking this recall voluntarily. The CFIA is monitoring the effectiveness of the recall.

For more information, consumers and industry can call Saputo Inc. at 1-866-665-3070 or email consumer@saputo.com.