Lactic Acid: Usually Vegan Despite the Name

The name misleads: commercial lactic acid is almost always fermented from plant sugars such as corn, beet or cassava, not from milk, so it is usually vegan and vegetarian. It is gluten-free. The uncommon exception is a grade fermented on dairy whey, which a supplier declaration identifies. Where the feedstock is a high-risk crop, non-GMO status follows the sugar.