Tetanus Toxoid (BIO TT) 40 IU/0.5ml is a vaccine used to prevent tetanus infection by stimulating the immune system to produce antibodies against the tetanus toxin. Each ampoule contains 40 IU of tetanus toxoid in 0.5ml of solution, with 1 ampoule corresponding to a single dose. The pack contains 10 ampoules, offering a sufficient supply for 10 doses of vaccination. It is typically administered via intramuscular injection.