Schwartz Ground Ginger contains 100% pure ground ginger. As a single-ingredient product, it does not contain added fillers, preservatives, or other common food allergens. However, there is a possibility of cross-contamination with allergens such as celery and mustard due to manufacturing practices. The Schwartz brand website states that while measures are taken to minimize cross-contact, consumers should always check the label for the most accurate and up-to-date allergen information. An allergy to ginger itself is rare but can occur and lead to symptoms like hives, itching, or anaphylaxis.