Streptococcus Equi Bacterial ExtractFor use in healthy horses of all ages as an aid in the reduction of disease (strangles) due to Streptococcus equi infection.Shipping charges for refrigerated items are a flat charge based on your location or zone. Cold items are packed on ice and shipped separately in a cooler with expedited shipping. Med-Vet can only ship cold items Monday-Wednesday. *Next Day Air Available With Additional Charges*