More than 2.5 million bottles of a prescription eye drop used to treat eye inflammation and allergies have been voluntarily recalled nationwide because they may contain a foreign substance, according to The Hill, which cited the Food and Drug Administration.

The recalled product is Prednisolone Acetate Ophthalmic Suspension USP, 1%, manufactured by Lupin Pharmaceuticals Inc., with the FDA saying the recall covers about 2.53 million bottles in 5 mL, 10 mL and 15 mL sizes spanning dozens of individual lot numbers.

The Hill reported the recall was initiated in early June but was classified by the FDA last week as a Class II recall, meaning use of the product could cause temporary or medically reversible adverse health consequences.

Prednisolone is a prescription steroid used to relieve redness, itching and swelling caused by eye infections and other eye conditions, and consumers should check whether their medication is included in the recall, while Lupin Pharmaceuticals did not immediately respond to a request for comment, according to The Hill.