Recommended for use when a non-immunized animal, or an animal whose immune status is unknown, suffers a deep penetrating wound that has or may become contaminated with soil. Tetanus Antitoxin provides quick, short-term protection. Antitoxin may also be administered to animals following castration, docking, and other operations performed on premises. 21-day slaughter withdrawal. Available in 1x1500 units, 10x1500 units, or 50 mL (15,000 unit) bottle--please select. Note: This item is a refrigerated pharmaceutical. Please see our Shipping page for important information.