What flu vaccines do not have gelatin or shellfish in the ingredients?

Several flu vaccines are formulated without Gelatin or shellfish-derived ingredients. For example, Fluarix Quadrivalent and Fluzone Quadrivalent are often considered gelatin-free and shellfish-free, but it's essential to check the specific product information as formulations can vary. Always consult with a healthcare provider or refer to the vaccine's package insert for the most accurate and updated ingredient information before vaccination.