The U.S. Food and Drug Administration (FDA) has elevated the risk classification for a nationwide butter recall, now labeling it a Class II recall — the second-highest warning level —due to a potential undeclared allergen.

As per the FDA site, a Class II recall indicates “a situation in which use of or exposure to a violative product may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequences is remote”.

The FDA has issued a nationwide recall of over 64,000 pounds of butter that contains an unlisted allergen.On Wednesday, the FDA increased the risk classification for the recall of one of Bunge North America Inc.