Stewart’s Shops is recalling units of Stewart’s Sportade Fruit Punch Isotonic Beverage 20 fluid oz. because they may contain undeclared milk. People who have an allergy to milk run the risk of serious or life-threatening allergic reaction if they consume this product, Stewart’s said.

The company operates stores in Massena, Canton, Potsdam, Ogdensburg, Winthrop and many other towns.

Approximately 1,600 units of affected product were distributed in upstate New York and South Vermont, and nearly 50 percent of units have already been recovered as of 4 p.m. Wednesday.

The Sportade Fruit Punch is packaged in a 20 oz. plastic bottle, UPC 0 82086 31006 8, and has a black label with a red plastic cap. Affected units have an expiration code date of DEC 02 which can be found on the neck of the bottle. All other expiration code dates of Sportade Fruit Punch are not affected by this recall.

No illnesses have been reported to date in connection with this problem.

The recall was initiated after routine quality control testing discovered that a milk allergen was in the product.

Customers who purchased Stewart’s Sportade Fruit Punch with a code date of DEC 02 are urged to return them to their local Stewart’s Shops for a full refund. Customers with questions may contact Stewart’s Consumer Affairs Department at 518-581-1200 ext. 2130, Monday to Friday, 8 a.m. to 4:30 p.m.