Asda is recalling all corned beef products from its budget range after traces of veterinary drug phenylbutazone were found in some batches.
The Food Standards Agency said "very low levels" of the painkilling medicine, known as bute, were detected in the Asda Smart Price Corned Beef.
Customers who have bought the 340g tins, with any date code, have been urged not to eat the corned beef but to return it to the supermarket.
More top news
England and Wales could see drink-driving limit fall to 50mg if same measure proves successful in Scotland, minister suggests.
Aaren O'Connor, 25, did not know she had been shot and kept telling dad David "my head hurts" before becoming incoherent.
Britons are shunning trips to Disneyland Paris following the November terror attacks in the French capital.