Friendliest.app says
Minute Maid® Apple Juice Frozen Slush is free of all the top 8 food allergens - gluten/wheat, milk, fish, shellfish, peanuts, tree nuts, eggs and soy.

Ingredients: Concentrated Apple Juice, Pure Filtered Water, Vitamin C (Ascorbic Acid), Sodium Benzoate and Potassium Sorbate (To Protect Taste).