The Canadian Food Inspection Agency is updating the number of grocery stores involved in a previous warning not to eat No Name brand all-purpose flour sold in Ontario. The flour may contain excessively high levels of folic acid, iron, niacin, riboflavin and thiamine.

Made by Prairie Flour Mills Ltd. of Elie, Manitoba, the flour is sold in 2.5 kg bags with lot codes beginning with 125J and UPC 0 60383 01375 2. If the lot code is not evident, consumers are advised to check with their retailer.

The flour is a normal light beige colour when dry, but may turn yellow-orange when mixed with water.

The CFIA previously reported that the flour had been sold at the following stores: No Frills, Cash and Carry, Freshmart, Fortinos, Zehrs, Real Canadian Superstore and Loblaws.

The updated warning states the flour was also sold at Independents, Valu-Mart and Your Independent Grocer.

Based on normal levels of consumption for food made from this flour (such as bread), the iron and niacin could lead to symptoms such as flushed and itchy skin, as well as nausea, vomiting and diarrhoea.

The CFIA has received reports of four reactions.