Disney says
Plant-based blend of Coconut and Rice Milk with zippy citrus and tropical characteristics.
Friendliest.app says
Green milk is made from a plant-based powder blend.

It is free from gluten/wheat*, milk, fish, shellfish, peanuts, eggs and soy.

We do not consider this meal tree nut-friendly due to the presence of coconut oil and coconut. The FDA classifies coconut as a tree nut, though many individuals with tree nut allergies do not have a reaction to coconut.

*Note: People have reported gluten-allergy reactions to green milk. Green milk does not directly contain gluten/wheat ingredients, but does contain oats that are not certified gluten-free. This can lead to trace amounts of gluten being present in the drink. People with oat allergies or those very sensitive to gluten, like individuals with celiac disease may want to avoid green milk.