The Coles Kitchen Chicken and Salad Sandwich (194g) was available for purchase at regular, local, and online stores between February 27 and 28.

Consumers who have a milk allergy or intolerance have been warned they may suffer a reaction if the product is consumed.

The product has an undeclared allergen, milk.

“Any consumers concerned about their health should seek medical advice,” the supermarket said.

The use-by date is March 2.

Store locations selling the product include; South Melbourne, Glenferrie, Camberwell, Balwyn North, Fitzroy, Brighton, St Kilda, Toorak Village, Normanby Road and Surrey Hills.

Customers can return the product to any Coles supermarket or Coles Local store for a full refund.

Coles Online customers can receive a full refund or credit by contacting Coles Online Customer Care on 1800 455 400.

“We apologise to our customers for any inconvenience,” the supermarket said.